128492804 has 36 divisors (see below), whose sum is σ = 248364732. Its totient is φ = 58122240.

The previous prime is 128492803. The next prime is 128492807. The reversal of 128492804 is 408294821.

It can be written as a sum of positive squares in 2 ways, for example, as 125395204 + 3097600 = 11198^2 + 1760^2 .

It is not an unprimeable number, because it can be changed into a prime (128492803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123872 + ... + 124904.

Almost surely, 2^128492804 is an apocalyptic number.

It is an amenable number.

128492804 is a deficient number, since it is larger than the sum of its proper divisors (119871928).

128492804 is a wasteful number, since it uses less digits than its factorization.

128492804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 128492804 is about 11335.4666423575. The cubic root of 128492804 is about 504.6143564292.

The spelling of 128492804 in words is "one hundred twenty-eight million, four hundred ninety-two thousand, eight hundred four".