628774692 has 96 divisors (see below), whose sum is σ = 1823910144. Its totient is φ = 164160000.

The previous prime is 628774691. The next prime is 628774703. The reversal of 628774692 is 296477826.

628774692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×628774692² = 790715226599389728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (628774691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107442 + ... + 113142.

It is an arithmetic number, because the mean of its divisors is an integer number (18999064).

Almost surely, 2^628774692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628774692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (911955072).

628774692 is an abundant number, since it is smaller than the sum of its proper divisors (1195135452).

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

628774692 is a wasteful number, since it uses less digits than its factorization.

628774692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5829 (or 5827 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 628774692 is about 25075.3801965195. The cubic root of 628774692 is about 856.7057551208.

The spelling of 628774692 in words is "six hundred twenty-eight million, seven hundred seventy-four thousand, six hundred ninety-two".