63393040 has 20 divisors (see below), whose sum is σ = 147389004. Its totient is φ = 25357184.

The previous prime is 63393023. The next prime is 63393053. The reversal of 63393040 is 4039336.

It can be written as a sum of positive squares in 2 ways, for example, as 9634816 + 53758224 = 3104^2 + 7332^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396127 + ... + 396286.

Almost surely, 2^63393040 is an apocalyptic number.

It is an amenable number.

63393040 is an abundant number, since it is smaller than the sum of its proper divisors (83995964).

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

63393040 is a wasteful number, since it uses less digits than its factorization.

63393040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792426 (or 792420 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 63393040 is about 7961.9746294497. The cubic root of 63393040 is about 398.7314814040.

The spelling of 63393040 in words is "sixty-three million, three hundred ninety-three thousand, forty".