53702720 has 56 divisors (see below), whose sum is σ = 128573784. Its totient is φ = 21364736.

The previous prime is 53702713. The next prime is 53702731. The reversal of 53702720 is 2720735.

It can be written as a sum of positive squares in 4 ways, for example, as 12845056 + 40857664 = 3584^2 + 6392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53702720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81914 + ... + 82566.

Almost surely, 2^53702720 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 53702720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64286892).

53702720 is an abundant number, since it is smaller than the sum of its proper divisors (74871064).

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

53702720 is a wasteful number, since it uses less digits than its factorization.

53702720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 53702720 is about 7328.2139706753. The cubic root of 53702720 is about 377.2814283745.

The spelling of 53702720 in words is "fifty-three million, seven hundred two thousand, seven hundred twenty".