628894250 has 16 divisors (see below), whose sum is σ = 1177290504. Its totient is φ = 251557600.

The previous prime is 628894247. The next prime is 628894309. The reversal of 628894250 is 52498826.

It can be written as a sum of positive squares in 4 ways, for example, as 176013289 + 452880961 = 13267^2 + 21281^2 .

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, 1257539 + ... + 1258038.

Almost surely, 2^628894250 is an apocalyptic number.

628894250 is a deficient number, since it is larger than the sum of its proper divisors (548396254).

628894250 is a wasteful number, since it uses less digits than its factorization.

628894250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515594 (or 2515584 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 628894250 is about 25077.7640550349. The cubic root of 628894250 is about 856.7600509530.

The spelling of 628894250 in words is "six hundred twenty-eight million, eight hundred ninety-four thousand, two hundred fifty".