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22445000 = 2354672
BaseRepresentation
bin101010110011…
…1101111001000
31120020022202022
41111213233020
521221220000
62121024012
7361531214
oct125475710
946208668
1022445000
1111740296
127625008
13485b286
142da3944
151e85585
hex1567bc8

22445000 has 60 divisors (see below), whose sum is σ = 53385255. Its totient is φ = 8844000.

The previous prime is 22444993. The next prime is 22445021. The reversal of 22445000 is 54422.

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 3 ways, for example, as 5189284 + 17255716 = 2278^2 + 4154^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=3350.

It is a self number, because there is not a number n which added to its sum of digits gives 22445000.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 334967 + ... + 335033.

Almost surely, 222445000 is an apocalyptic number.

22445000 is a gapful number since it is divisible by the number (20) 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 22445000

22445000 is an abundant number, since it is smaller than the sum of its proper divisors (30940255).

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

22445000 is an frugal number, since it uses more digits than its factorization.

22445000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22445000 is about 4737.6154339499. The cubic root of 22445000 is about 282.0805899474.

Adding to 22445000 its reverse (54422), we get a palindrome (22499422).

The spelling of 22445000 in words is "twenty-two million, four hundred forty-five thousand".

Divisors: 1 2 4 5 8 10 20 25 40 50 67 100 125 134 200 250 268 335 500 536 625 670 1000 1250 1340 1675 2500 2680 3350 4489 5000 6700 8375 8978 13400 16750 17956 22445 33500 35912 41875 44890 67000 83750 89780 112225 167500 179560 224450 335000 448900 561125 897800 1122250 2244500 2805625 4489000 5611250 11222500 22445000