19316872 has 32 divisors (see below), whose sum is σ = 38030400. Its totient is φ = 9180864.

The previous prime is 19316861. The next prime is 19316881. The reversal of 19316872 is 27861391.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50779 + ... + 51157.

It is an arithmetic number, because the mean of its divisors is an integer number (1188450).

Almost surely, 2^19316872 is an apocalyptic number.

It is an amenable number.

19316872 is a deficient number, since it is larger than the sum of its proper divisors (18713528).

19316872 is a wasteful number, since it uses less digits than its factorization.

19316872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685 (or 681 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 19316872 is about 4395.0963584431. The cubic root of 19316872 is about 268.3154005565.

The spelling of 19316872 in words is "nineteen million, three hundred sixteen thousand, eight hundred seventy-two".