19112864 has 24 divisors (see below), whose sum is σ = 38844288. Its totient is φ = 9247680.

The previous prime is 19112843. The next prime is 19112903. The reversal of 19112864 is 46821191.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 19112864.

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, 8642 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (1618512).

Almost surely, 2^19112864 is an apocalyptic number.

It is an amenable number.

19112864 is an abundant number, since it is smaller than the sum of its proper divisors (19731424).

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

19112864 is a wasteful number, since it uses less digits than its factorization.

19112864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19308 (or 19300 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 19112864 is about 4371.8261630582. The cubic root of 19112864 is about 267.3674843689.

The spelling of 19112864 in words is "nineteen million, one hundred twelve thousand, eight hundred sixty-four".