52747920 has 120 divisors (see below), whose sum is σ = 180199032. Its totient is φ = 13824000.

The previous prime is 52747907. The next prime is 52747931. The reversal of 52747920 is 2974725.

52747920 is a `hidden beast` number, since 527 + 47 + 92 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6290064 + 46457856 = 2508^2 + 6816^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43320 + ... + 44520.

Almost surely, 2^52747920 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 52747920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90099516).

52747920 is an abundant number, since it is smaller than the sum of its proper divisors (127451112).

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

52747920 is a wasteful number, since it uses less digits than its factorization.

52747920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 52747920 is about 7262.7763286501. The cubic root of 52747920 is about 375.0321039182.

The spelling of 52747920 in words is "fifty-two million, seven hundred forty-seven thousand, nine hundred twenty".