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222240000 = 28354463
BaseRepresentation
bin11010011111100…
…01110100000000
3120111011221222010
431033301310000
5423343140000
634015212520
75336003013
oct1517616400
9514157863
10222240000
111044a3224
1262517140
1337073178
142173137a
151479dd50
hexd3f1d00

222240000 has 180 divisors, whose sum is σ = 740712896. Its totient is φ = 59136000.

The previous prime is 222239993. The next prime is 222240001. The reversal of 222240000 is 42222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222240001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 479769 + ... + 480231.

Almost surely, 2222240000 is an apocalyptic number.

222240000 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 222240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370356448).

222240000 is an abundant number, since it is smaller than the sum of its proper divisors (518472896).

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

222240000 is an frugal number, since it uses more digits than its factorization.

222240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 222240000 is about 14907.7161228674. The cubic root of 222240000 is about 605.7230160297.

Adding to 222240000 its reverse (42222), we get a palindrome (222282222).

The spelling of 222240000 in words is "two hundred twenty-two million, two hundred forty thousand".