628485530 has 8 divisors (see below), whose sum is σ = 1131273972. Its totient is φ = 251394208.

The previous prime is 628485521. The next prime is 628485541. The reversal of 628485530 is 35584826.

It can be written as a sum of positive squares in 2 ways, for example, as 607573201 + 20912329 = 24649^2 + 4573^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×628485530² = 789988122838761800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31424267 + ... + 31424286.

Almost surely, 2^628485530 is an apocalyptic number.

628485530 is a deficient number, since it is larger than the sum of its proper divisors (502788442).

628485530 is a wasteful number, since it uses less digits than its factorization.

628485530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62848560.

The product of its (nonzero) digits is 230400, while the sum is 41.

The square root of 628485530 is about 25069.6136787147. The cubic root of 628485530 is about 856.5744072059.

The spelling of 628485530 in words is "six hundred twenty-eight million, four hundred eighty-five thousand, five hundred thirty".