52744440 has 64 divisors (see below), whose sum is σ = 180840960. Its totient is φ = 12055680.

The previous prime is 52744427. The next prime is 52744441. The reversal of 52744440 is 4444725.

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

It is a junction number, because it is equal to n+sod(n) for n = 52744398 and 52744407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52744441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30556 + ... + 32235.

It is an arithmetic number, because the mean of its divisors is an integer number (2825640).

Almost surely, 2^52744440 is an apocalyptic number.

It is an amenable number.

52744440 is an abundant number, since it is smaller than the sum of its proper divisors (128096520).

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

52744440 is a wasteful number, since it uses less digits than its factorization.

52744440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62812 (or 62808 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 30.

The square root of 52744440 is about 7262.5367468950. The cubic root of 52744440 is about 375.0238562601.

The spelling of 52744440 in words is "fifty-two million, seven hundred forty-four thousand, four hundred forty".