20875372 has 36 divisors (see below), whose sum is σ = 43107960. Its totient is φ = 8817984.

The previous prime is 20875343. The next prime is 20875381. The reversal of 20875372 is 27357802.

It is a super-2 number, since 2×20875372² = 871562312276768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13579 + ... + 15037.

Almost surely, 2^20875372 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 20875372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21553980).

20875372 is an abundant number, since it is smaller than the sum of its proper divisors (22232588).

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

20875372 is a wasteful number, since it uses less digits than its factorization.

20875372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 20875372 is about 4568.9574303116. The cubic root of 20875372 is about 275.3455578855.

The spelling of 20875372 in words is "twenty million, eight hundred seventy-five thousand, three hundred seventy-two".