628522556 has 12 divisors (see below), whose sum is σ = 1100154720. Its totient is φ = 314192640.

The previous prime is 628522547. The next prime is 628522561. The reversal of 628522556 is 655225826.

It is a congruent 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, 7325 + ... + 36203.

It is an arithmetic number, because the mean of its divisors is an integer number (91679560).

Almost surely, 2^628522556 is an apocalyptic number.

It is an amenable number.

628522556 is a deficient number, since it is larger than the sum of its proper divisors (471632164).

628522556 is a wasteful number, since it uses less digits than its factorization.

628522556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34324 (or 34322 counting only the distinct ones).

The product of its digits is 288000, while the sum is 41.

The square root of 628522556 is about 25070.3521315517. The cubic root of 628522556 is about 856.5912280128.

The spelling of 628522556 in words is "six hundred twenty-eight million, five hundred twenty-two thousand, five hundred fifty-six".