16855572 has 24 divisors (see below), whose sum is σ = 40393696. Its totient is φ = 5466528.

The previous prime is 16855571. The next prime is 16855591. The reversal of 16855572 is 27555861.

It is a super-2 number, since 2×16855572² = 568220614894368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16855572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16855571) 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 7 ways as a sum of consecutive naturals, for example, 18538 + ... + 19425.

Almost surely, 2^16855572 is an apocalyptic number.

16855572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16855572 is an abundant number, since it is smaller than the sum of its proper divisors (23538124).

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

16855572 is a wasteful number, since it uses less digits than its factorization.

16855572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38007 (or 38005 counting only the distinct ones).

The product of its digits is 84000, while the sum is 39.

The square root of 16855572 is about 4105.5537994283. The cubic root of 16855572 is about 256.3979203867.

The spelling of 16855572 in words is "sixteen million, eight hundred fifty-five thousand, five hundred seventy-two".