52720392 has 32 divisors (see below), whose sum is σ = 132163200. Its totient is φ = 17525184.

The previous prime is 52720387. The next prime is 52720399. The reversal of 52720392 is 29302725.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (52720399) 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, 6513 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (4130100).

Almost surely, 2^52720392 is an apocalyptic number.

It is an amenable number.

52720392 is an abundant number, since it is smaller than the sum of its proper divisors (79442808).

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

52720392 is a wasteful number, since it uses less digits than its factorization.

52720392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045 (or 6041 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 52720392 is about 7260.8809382884. The cubic root of 52720392 is about 374.9668521811.

The spelling of 52720392 in words is "fifty-two million, seven hundred twenty thousand, three hundred ninety-two".