621728992 has 12 divisors (see below), whose sum is σ = 1224029016. Its totient is φ = 310864480.

The previous prime is 621728983. The next prime is 621729029. The reversal of 621728992 is 299827126.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9714484 + ... + 9714547.

It is an arithmetic number, because the mean of its divisors is an integer number (102002418).

Almost surely, 2^621728992 is an apocalyptic number.

It is an amenable number.

621728992 is a deficient number, since it is larger than the sum of its proper divisors (602300024).

621728992 is a wasteful number, since it uses less digits than its factorization.

621728992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19429041 (or 19429033 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 621728992 is about 24934.4940193299. The cubic root of 621728992 is about 853.4938049989.

The spelling of 621728992 in words is "six hundred twenty-one million, seven hundred twenty-eight thousand, nine hundred ninety-two".