52140384 has 72 divisors (see below), whose sum is σ = 149189040. Its totient is φ = 17273088.

The previous prime is 52140367. The next prime is 52140391. The reversal of 52140384 is 48304125.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

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, 56277 + ... + 57195.

It is an arithmetic number, because the mean of its divisors is an integer number (2072070).

Almost surely, 2^52140384 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 52140384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74594520).

52140384 is an abundant number, since it is smaller than the sum of its proper divisors (97048656).

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

52140384 is a wasteful number, since it uses less digits than its factorization.

52140384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 52140384 is about 7220.8298692048. The cubic root of 52140384 is about 373.5867015917.

The spelling of 52140384 in words is "fifty-two million, one hundred forty thousand, three hundred eighty-four".