620936928 has 144 divisors (see below), whose sum is σ = 1871251200. Its totient is φ = 202455936.

The previous prime is 620936903. The next prime is 620936941. The reversal of 620936928 is 829639026.

It is a tau number, because it is divible by the number of its divisors (144).

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 in 23 ways as a sum of consecutive naturals, for example, 364623 + ... + 366321.

It is an arithmetic number, because the mean of its divisors is an integer number (12994800).

Almost surely, 2^620936928 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 620936928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (935625600).

620936928 is an abundant number, since it is smaller than the sum of its proper divisors (1250314272).

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

620936928 is a wasteful number, since it uses less digits than its factorization.

620936928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1751 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 620936928 is about 24918.6060605324. The cubic root of 620936928 is about 853.1312091807.

The spelling of 620936928 in words is "six hundred twenty million, nine hundred thirty-six thousand, nine hundred twenty-eight".