52189920 has 120 divisors (see below), whose sum is σ = 184232664. Its totient is φ = 13913856.

The previous prime is 52189919. The next prime is 52189961. The reversal of 52189920 is 2998125.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10947 + ... + 14973.

Almost surely, 2^52189920 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 52189920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92116332).

52189920 is an abundant number, since it is smaller than the sum of its proper divisors (132042744).

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

52189920 is a wasteful number, since it uses less digits than its factorization.

52189920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054 (or 4037 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 52189920 is about 7224.2591315650. The cubic root of 52189920 is about 373.7049728943.

The spelling of 52189920 in words is "fifty-two million, one hundred eighty-nine thousand, nine hundred twenty".