128791476 has 36 divisors (see below), whose sum is σ = 355153344. Its totient is φ = 39027600.

The previous prime is 128791447. The next prime is 128791499. The reversal of 128791476 is 674197821.

It is a happy number.

128791476 is a `hidden beast` number, since 12 + 87 + 91 + 476 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162220 + ... + 163011.

Almost surely, 2^128791476 is an apocalyptic number.

It is an amenable number.

128791476 is an abundant number, since it is smaller than the sum of its proper divisors (226361868).

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

128791476 is a wasteful number, since it uses less digits than its factorization.

128791476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325252 (or 325247 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 128791476 is about 11348.6332216704. The cubic root of 128791476 is about 505.0050334433.

The spelling of 128791476 in words is "one hundred twenty-eight million, seven hundred ninety-one thousand, four hundred seventy-six".