628808826 has 32 divisors (see below), whose sum is σ = 1271982528. Its totient is φ = 207217280.

The previous prime is 628808813. The next prime is 628808833.

628808826 is nontrivially palindromic in base 10.

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, 526486 + ... + 527678.

It is an arithmetic number, because the mean of its divisors is an integer number (39749454).

Almost surely, 2^628808826 is an apocalyptic number.

628808826 is an abundant number, since it is smaller than the sum of its proper divisors (643173702).

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

628808826 is a wasteful number, since it uses less digits than its factorization.

628808826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 628808826 is about 25076.0608150483. The cubic root of 628808826 is about 856.7212573696.

The spelling of 628808826 in words is "six hundred twenty-eight million, eight hundred eight thousand, eight hundred twenty-six".