652988440 has 32 divisors (see below), whose sum is σ = 1582242480. Its totient is φ = 241103232.

The previous prime is 652988429. The next prime is 652988471. The reversal of 652988440 is 44889256.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 627354 + ... + 628393.

Almost surely, 2^652988440 is an apocalyptic number.

It is an amenable number.

652988440 is an abundant number, since it is smaller than the sum of its proper divisors (929254040).

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

652988440 is a wasteful number, since it uses less digits than its factorization.

652988440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255771 (or 1255767 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The square root of 652988440 is about 25553.6384884814. The cubic root of 652988440 is about 867.5646163254.

The spelling of 652988440 in words is "six hundred fifty-two million, nine hundred eighty-eight thousand, four hundred forty".