628560426 has 32 divisors (see below), whose sum is σ = 1355655168. Its totient is φ = 193141440.

The previous prime is 628560407. The next prime is 628560461. The reversal of 628560426 is 624065826.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 57111 + ... + 67221.

It is an arithmetic number, because the mean of its divisors is an integer number (42364224).

Almost surely, 2^628560426 is an apocalyptic number.

628560426 is an abundant number, since it is smaller than the sum of its proper divisors (727094742).

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

628560426 is a wasteful number, since it uses less digits than its factorization.

628560426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10926.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 628560426 is about 25071.1073947682. The cubic root of 628560426 is about 856.6084315631.

The spelling of 628560426 in words is "six hundred twenty-eight million, five hundred sixty thousand, four hundred twenty-six".