628867292 has 6 divisors (see below), whose sum is σ = 1100517768. Its totient is φ = 314433644.

The previous prime is 628867289. The next prime is 628867363. The reversal of 628867292 is 292768826.

It is a self number, because there is not a number n which added to its sum of digits gives 628867292.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78608408 + ... + 78608415.

It is an arithmetic number, because the mean of its divisors is an integer number (183419628).

Almost surely, 2^628867292 is an apocalyptic number.

It is an amenable number.

628867292 is a deficient number, since it is larger than the sum of its proper divisors (471650476).

628867292 is a wasteful number, since it uses less digits than its factorization.

628867292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157216827 (or 157216825 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 628867292 is about 25077.2265611650. The cubic root of 628867292 is about 856.7478089014.

The spelling of 628867292 in words is "six hundred twenty-eight million, eight hundred sixty-seven thousand, two hundred ninety-two".