628044930 has 48 divisors (see below), whose sum is σ = 1649773944. Its totient is φ = 165749760.

The previous prime is 628044899. The next prime is 628044931. The reversal of 628044930 is 39440826.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 384591321 + 243453609 = 19611^2 + 15603^2 .

It is not an unprimeable number, because it can be changed into a prime (628044931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27241 + ... + 44700.

Almost surely, 2^628044930 is an apocalyptic number.

628044930 is an abundant number, since it is smaller than the sum of its proper divisors (1021729014).

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

628044930 is a wasteful number, since it uses less digits than its factorization.

628044930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72051 (or 72048 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 628044930 is about 25060.8246073428. The cubic root of 628044930 is about 856.3741931496.

The spelling of 628044930 in words is "six hundred twenty-eight million, forty-four thousand, nine hundred thirty".