52742320 has 20 divisors (see below), whose sum is σ = 122626080. Its totient is φ = 21096896.

The previous prime is 52742269. The next prime is 52742321. The reversal of 52742320 is 2324725.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (52742321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329560 + ... + 329719.

It is an arithmetic number, because the mean of its divisors is an integer number (6131304).

Almost surely, 2^52742320 is an apocalyptic number.

It is an amenable number.

52742320 is an abundant number, since it is smaller than the sum of its proper divisors (69883760).

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

52742320 is a wasteful number, since it uses less digits than its factorization.

52742320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659292 (or 659286 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 52742320 is about 7262.3907909173. The cubic root of 52742320 is about 375.0188316469.

The spelling of 52742320 in words is "fifty-two million, seven hundred forty-two thousand, three hundred twenty".