52428720 has 40 divisors (see below), whose sum is σ = 162529776. Its totient is φ = 13980928.

The previous prime is 52428703. The next prime is 52428721. The reversal of 52428720 is 2782425.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (52428721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108987 + ... + 109466.

Almost surely, 2^52428720 is an apocalyptic number.

It is an amenable number.

52428720 is an abundant number, since it is smaller than the sum of its proper divisors (110101056).

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

52428720 is a wasteful number, since it uses less digits than its factorization.

52428720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218469 (or 218463 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 52428720 is about 7240.7679150764. The cubic root of 52428720 is about 374.2740801254.

The spelling of 52428720 in words is "fifty-two million, four hundred twenty-eight thousand, seven hundred twenty".