622920728 has 16 divisors (see below), whose sum is σ = 1170680280. Its totient is φ = 310739328.

The previous prime is 622920691. The next prime is 622920737. The reversal of 622920728 is 827029226.

It is a junction number, because it is equal to n+sod(n) for n = 622920691 and 622920700.

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, 86450 + ... + 93377.

Almost surely, 2^622920728 is an apocalyptic number.

It is an amenable number.

622920728 is a deficient number, since it is larger than the sum of its proper divisors (547759552).

622920728 is a wasteful number, since it uses less digits than its factorization.

622920728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180266 (or 180262 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 622920728 is about 24958.3799153711. The cubic root of 622920728 is about 854.0387852663.

The spelling of 622920728 in words is "six hundred twenty-two million, nine hundred twenty thousand, seven hundred twenty-eight".