52647840 has 192 divisors, whose sum is σ = 210712320. Its totient is φ = 12026880.

The previous prime is 52647797. The next prime is 52647857. The reversal of 52647840 is 4874625.

52647840 is a `hidden beast` number, since 5 + 2 + 647 + 8 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 52647795 and 52647804.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29370 + ... + 31110.

It is an arithmetic number, because the mean of its divisors is an integer number (1097460).

Almost surely, 2^52647840 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 52647840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105356160).

52647840 is an abundant number, since it is smaller than the sum of its proper divisors (158064480).

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

52647840 is a wasteful number, since it uses less digits than its factorization.

52647840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 52647840 is about 7255.8831302606. The cubic root of 52647840 is about 374.7947676997.

The spelling of 52647840 in words is "fifty-two million, six hundred forty-seven thousand, eight hundred forty".