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4500000 = 253256
BaseRepresentation
bin10001001010101000100000
322110121211200
4101022220200
52123000000
6240241200
753151351
oct21125040
98417750
104500000
1125a3a0a
121610200
13c1732b
14851d28
155dd500
hex44aa20

4500000 has 126 divisors (see below), whose sum is σ = 15995889. Its totient is φ = 1200000.

The previous prime is 4499969. The next prime is 4500007. The reversal of 4500000 is 54.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 4 ways, for example, as 767376 + 3732624 = 876^2 + 1932^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=1500.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is not an unprimeable number, because it can be changed into a prime (4500007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 899998 + ... + 900002.

Almost surely, 24500000 is an apocalyptic number.

4500000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4500000

4500000 is an abundant number, since it is smaller than the sum of its proper divisors (11495889).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4500000 is an frugal number, since it uses more digits than its factorization.

4500000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 4500000 is about 2121.3203435596. The cubic root of 4500000 is about 165.0963624447.

Adding to 4500000 its reverse (54), we get a palindrome (4500054).

The spelling of 4500000 in words is "four million, five hundred thousand".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 45 48 50 60 72 75 80 90 96 100 120 125 144 150 160 180 200 225 240 250 288 300 360 375 400 450 480 500 600 625 720 750 800 900 1000 1125 1200 1250 1440 1500 1800 1875 2000 2250 2400 2500 3000 3125 3600 3750 4000 4500 5000 5625 6000 6250 7200 7500 9000 9375 10000 11250 12000 12500 15000 15625 18000 18750 20000 22500 25000 28125 30000 31250 36000 37500 45000 46875 50000 56250 60000 62500 75000 90000 93750 100000 112500 125000 140625 150000 180000 187500 225000 250000 281250 300000 375000 450000 500000 562500 750000 900000 1125000 1500000 2250000 4500000