52847640 has 96 divisors (see below), whose sum is σ = 178148880. Its totient is φ = 14090112.

The previous prime is 52847623. The next prime is 52847659. The reversal of 52847640 is 4674825.

52847640 is a `hidden beast` number, since 5 + 2 + 8 + 4 + 7 + 640 = 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 = 52847595 and 52847604.

It is a congruent number.

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, 7002 + ... + 12438.

Almost surely, 2^52847640 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 52847640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89074440).

52847640 is an abundant number, since it is smaller than the sum of its proper divisors (125301240).

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

52847640 is a wasteful number, since it uses less digits than its factorization.

52847640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5447 counting only the distinct ones).

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

The square root of 52847640 is about 7269.6382303386. The cubic root of 52847640 is about 375.2682880117.

The spelling of 52847640 in words is "fifty-two million, eight hundred forty-seven thousand, six hundred forty".