128976512 has 32 divisors (see below), whose sum is σ = 293653920. Its totient is φ = 55275264.

The previous prime is 128976511. The next prime is 128976553. The reversal of 128976512 is 215679821.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×128976512² = 33269881295372288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128976512.

It is not an unprimeable number, because it can be changed into a prime (128976511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71078 + ... + 72869.

It is an arithmetic number, because the mean of its divisors is an integer number (9176685).

Almost surely, 2^128976512 is an apocalyptic number.

It is an amenable number.

128976512 is an abundant number, since it is smaller than the sum of its proper divisors (164677408).

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

128976512 is an equidigital number, since it uses as much as digits as its factorization.

128976512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143968 (or 143956 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 128976512 is about 11356.7826429848. The cubic root of 128976512 is about 505.2467663055.

The spelling of 128976512 in words is "one hundred twenty-eight million, nine hundred seventy-six thousand, five hundred twelve".