120989928 has 32 divisors (see below), whose sum is σ = 303478560. Its totient is φ = 40196160.

The previous prime is 120989923. The next prime is 120989933. The reversal of 120989928 is 829989021.

It is an interprime number because it is at equal distance from previous prime (120989923) and next prime (120989933).

It is not an unprimeable number, because it can be changed into a prime (120989923) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 843 + ... + 15578.

It is an arithmetic number, because the mean of its divisors is an integer number (9483705).

Almost surely, 2^120989928 is an apocalyptic number.

It is an amenable number.

120989928 is an abundant number, since it is smaller than the sum of its proper divisors (182488632).

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

120989928 is a wasteful number, since it uses less digits than its factorization.

120989928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16737 (or 16733 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 120989928 is about 10999.5421722906. The cubic root of 120989928 is about 494.5950202546.

The spelling of 120989928 in words is "one hundred twenty million, nine hundred eighty-nine thousand, nine hundred twenty-eight".