128932154 has 16 divisors (see below), whose sum is σ = 208498920. Its totient is φ = 59443200.

The previous prime is 128932147. The next prime is 128932159. The reversal of 128932154 is 451239821.

It can be written as a sum of positive squares in 4 ways, for example, as 45630025 + 83302129 = 6755^2 + 9127^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (128932159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29162 + ... + 33290.

Almost surely, 2^128932154 is an apocalyptic number.

128932154 is a deficient number, since it is larger than the sum of its proper divisors (79566766).

128932154 is a wasteful number, since it uses less digits than its factorization.

128932154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345.

The product of its digits is 17280, while the sum is 35.

The square root of 128932154 is about 11354.8295451759. The cubic root of 128932154 is about 505.1888376550.

The spelling of 128932154 in words is "one hundred twenty-eight million, nine hundred thirty-two thousand, one hundred fifty-four".