652921128 has 64 divisors (see below), whose sum is σ = 1815792000. Its totient is φ = 217385856.

The previous prime is 652921103. The next prime is 652921201. The reversal of 652921128 is 821129256.

652921128 is a `hidden beast` number, since 6 + 529 + 2 + 1 + 128 = 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 = 652921092 and 652921101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311508 + ... + 313596.

It is an arithmetic number, because the mean of its divisors is an integer number (28371750).

Almost surely, 2^652921128 is an apocalyptic number.

It is an amenable number.

652921128 is an abundant number, since it is smaller than the sum of its proper divisors (1162870872).

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

652921128 is a wasteful number, since it uses less digits than its factorization.

652921128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551 (or 3541 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 652921128 is about 25552.3213818236. The cubic root of 652921128 is about 867.5348049165.

The spelling of 652921128 in words is "six hundred fifty-two million, nine hundred twenty-one thousand, one hundred twenty-eight".