628732250 has 32 divisors (see below), whose sum is σ = 1246229712. Its totient is φ = 236697600.

The previous prime is 628732241. The next prime is 628732277. The reversal of 628732250 is 52237826.

It can be written as a sum of positive squares in 8 ways, for example, as 148815601 + 479916649 = 12199^2 + 21907^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 628732250.

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, 69719 + ... + 78218.

Almost surely, 2^628732250 is an apocalyptic number.

628732250 is a deficient number, since it is larger than the sum of its proper divisors (617497462).

628732250 is a wasteful number, since it uses less digits than its factorization.

628732250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147971 (or 147961 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 628732250 is about 25074.5338939730. The cubic root of 628732250 is about 856.6864789401.

The spelling of 628732250 in words is "six hundred twenty-eight million, seven hundred thirty-two thousand, two hundred fifty".