128490375 has 32 divisors (see below), whose sum is σ = 230263488. Its totient is φ = 63254400.

The previous prime is 128490359. The next prime is 128490409. The reversal of 128490375 is 573094821.

It is not a de Polignac number, because 128490375 - 2⁴ = 128490359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8304 + ... + 18053.

It is an arithmetic number, because the mean of its divisors is an integer number (7195734).

Almost surely, 2^128490375 is an apocalyptic number.

128490375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128490375 is a deficient number, since it is larger than the sum of its proper divisors (101773113).

128490375 is a wasteful number, since it uses less digits than its factorization.

128490375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26388 (or 26378 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 128490375 is about 11335.3595002541. The cubic root of 128490375 is about 504.6111767025.

The spelling of 128490375 in words is "one hundred twenty-eight million, four hundred ninety thousand, three hundred seventy-five".