16872538 has 8 divisors (see below), whose sum is σ = 25502400. Its totient is φ = 8371740.

The previous prime is 16872523. The next prime is 16872553. The reversal of 16872538 is 83527861.

It is an interprime number because it is at equal distance from previous prime (16872523) and next prime (16872553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16872538² = 569365077122888, 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 16872538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31938 + ... + 32461.

It is an arithmetic number, because the mean of its divisors is an integer number (3187800).

Almost surely, 2^16872538 is an apocalyptic number.

16872538 is a deficient number, since it is larger than the sum of its proper divisors (8629862).

16872538 is a wasteful number, since it uses less digits than its factorization.

16872538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64532.

The product of its digits is 80640, while the sum is 40.

The square root of 16872538 is about 4107.6195052609. The cubic root of 16872538 is about 256.4839174370.

It can be divided in two parts, 1687 and 2538, that added together give a square (4225 = 65²).

The spelling of 16872538 in words is "sixteen million, eight hundred seventy-two thousand, five hundred thirty-eight".