128738575 has 12 divisors (see below), whose sum is σ = 182441200. Its totient is φ = 88277760.

The previous prime is 128738563. The next prime is 128738581. The reversal of 128738575 is 575837821.

It is not a de Polignac number, because 128738575 - 2⁵ = 128738543 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

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, 367650 + ... + 367999.

Almost surely, 2^128738575 is an apocalyptic number.

128738575 is a deficient number, since it is larger than the sum of its proper divisors (53702625).

128738575 is an equidigital number, since it uses as much as digits as its factorization.

128738575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735666 (or 735661 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The square root of 128738575 is about 11346.3022610893. The cubic root of 128738575 is about 504.9358804975.

The spelling of 128738575 in words is "one hundred twenty-eight million, seven hundred thirty-eight thousand, five hundred seventy-five".