128528374 has 16 divisors (see below), whose sum is σ = 207838512. Its totient is φ = 59259168.

The previous prime is 128528327. The next prime is 128528383. The reversal of 128528374 is 473825821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31432 + ... + 35284.

It is an arithmetic number, because the mean of its divisors is an integer number (12989907).

Almost surely, 2^128528374 is an apocalyptic number.

128528374 is a deficient number, since it is larger than the sum of its proper divisors (79310138).

128528374 is a wasteful number, since it uses less digits than its factorization.

128528374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151.

The product of its digits is 107520, while the sum is 40.

The square root of 128528374 is about 11337.0355031640. The cubic root of 128528374 is about 504.6609153962.

The spelling of 128528374 in words is "one hundred twenty-eight million, five hundred twenty-eight thousand, three hundred seventy-four".