19875264 has 56 divisors (see below), whose sum is σ = 53480208. Its totient is φ = 6512640.

The previous prime is 19875257. The next prime is 19875281. The reversal of 19875264 is 46257891.

It is a super-2 number, since 2×19875264² = 790052238139392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10864 + ... + 12560.

Almost surely, 2^19875264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19875264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26740104).

19875264 is an abundant number, since it is smaller than the sum of its proper divisors (33604944).

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

19875264 is a wasteful number, since it uses less digits than its factorization.

19875264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 1763 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 19875264 is about 4458.1682337032. The cubic root of 19875264 is about 270.8762750898.

The spelling of 19875264 in words is "nineteen million, eight hundred seventy-five thousand, two hundred sixty-four".