128012792 has 8 divisors (see below), whose sum is σ = 240024000. Its totient is φ = 64006392.

The previous prime is 128012789. The next prime is 128012803. The reversal of 128012792 is 297210821.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8000792 + ... + 8000807.

It is an arithmetic number, because the mean of its divisors is an integer number (30003000).

Almost surely, 2^128012792 is an apocalyptic number.

It is an amenable number.

128012792 is a deficient number, since it is larger than the sum of its proper divisors (112011208).

128012792 is a wasteful number, since it uses less digits than its factorization.

128012792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16001605 (or 16001601 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 128012792 is about 11314.2738167326. The cubic root of 128012792 is about 503.9852078467.

The spelling of 128012792 in words is "one hundred twenty-eight million, twelve thousand, seven hundred ninety-two".