19136872 has 16 divisors (see below), whose sum is σ = 35949060. Its totient is φ = 9550464.

The previous prime is 19136861. The next prime is 19136879. The reversal of 19136872 is 27863191.

It can be written as a sum of positive squares in 2 ways, for example, as 15729156 + 3407716 = 3966^2 + 1846^2 .

It is not an unprimeable number, because it can be changed into a prime (19136879) 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 3 ways as a sum of consecutive naturals, for example, 2998 + ... + 6874.

Almost surely, 2^19136872 is an apocalyptic number.

It is an amenable number.

19136872 is a deficient number, since it is larger than the sum of its proper divisors (16812188).

19136872 is a wasteful number, since it uses less digits than its factorization.

19136872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500 (or 4496 counting only the distinct ones).

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

The square root of 19136872 is about 4374.5710646874. The cubic root of 19136872 is about 267.4793858398.

The spelling of 19136872 in words is "nineteen million, one hundred thirty-six thousand, eight hundred seventy-two".