628418056 has 32 divisors (see below), whose sum is σ = 1425824640. Its totient is φ = 253479168.

The previous prime is 628418051. The next prime is 628418057. The reversal of 628418056 is 650814826.

It is not an unprimeable number, because it can be changed into a prime (628418051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329100 + ... + 331003.

It is an arithmetic number, because the mean of its divisors is an integer number (44557020).

Almost surely, 2^628418056 is an apocalyptic number.

It is an amenable number.

628418056 is an abundant number, since it is smaller than the sum of its proper divisors (797406584).

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

628418056 is a wasteful number, since it uses less digits than its factorization.

628418056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660133 (or 660129 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 628418056 is about 25068.2679098497. The cubic root of 628418056 is about 856.5437522598.

The spelling of 628418056 in words is "six hundred twenty-eight million, four hundred eighteen thousand, fifty-six".