16897572 has 30 divisors (see below), whose sum is σ = 44174438. Its totient is φ = 5632416.

The previous prime is 16897553. The next prime is 16897589. The reversal of 16897572 is 27579861.

It can be written as a sum of positive squares in only one way, i.e., 16842816 + 54756 = 4104^2 + 234^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25753 + ... + 26400.

Almost surely, 2^16897572 is an apocalyptic number.

16897572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16897572 is an abundant number, since it is smaller than the sum of its proper divisors (27276866).

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

16897572 is a wasteful number, since it uses less digits than its factorization.

16897572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52169 (or 52158 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 16897572 is about 4110.6656395285. The cubic root of 16897572 is about 256.6107042399.

It can be divided in two parts, 1689 and 7572, that added together give a cube (9261 = 21³).

The spelling of 16897572 in words is "sixteen million, eight hundred ninety-seven thousand, five hundred seventy-two".