53870640 has 40 divisors (see below), whose sum is σ = 166999728. Its totient is φ = 14365440.

The previous prime is 53870639. The next prime is 53870651. The reversal of 53870640 is 4607835.

It is a tau number, because it is divible by the number of its divisors (40).

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, 111991 + ... + 112470.

Almost surely, 2^53870640 is an apocalyptic number.

It is an amenable number.

53870640 is an abundant number, since it is smaller than the sum of its proper divisors (113129088).

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

53870640 is a wasteful number, since it uses less digits than its factorization.

53870640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224477 (or 224471 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 53870640 is about 7339.6621175637. The cubic root of 53870640 is about 377.6742525504.

The spelling of 53870640 in words is "fifty-three million, eight hundred seventy thousand, six hundred forty".