128373375 has 64 divisors (see below), whose sum is σ = 243734400. Its totient is φ = 59443200.

The previous prime is 128373359. The next prime is 128373379. The reversal of 128373375 is 573373821.

It is a happy number.

It is not a de Polignac number, because 128373375 - 2⁴ = 128373359 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128373379) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 82101 + ... + 83649.

It is an arithmetic number, because the mean of its divisors is an integer number (3808350).

Almost surely, 2^128373375 is an apocalyptic number.

128373375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128373375 is a deficient number, since it is larger than the sum of its proper divisors (115361025).

128373375 is a wasteful number, since it uses less digits than its factorization.

128373375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1587 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 128373375 is about 11330.1974828332. The cubic root of 128373375 is about 504.4579682445.

The spelling of 128373375 in words is "one hundred twenty-eight million, three hundred seventy-three thousand, three hundred seventy-five".