128820376 has 32 divisors (see below), whose sum is σ = 250058880. Its totient is φ = 62150400.

The previous prime is 128820371. The next prime is 128820379. The reversal of 128820376 is 673028821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128820371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128710 + ... + 129706.

It is an arithmetic number, because the mean of its divisors is an integer number (7814340).

Almost surely, 2^128820376 is an apocalyptic number.

It is an amenable number.

128820376 is a deficient number, since it is larger than the sum of its proper divisors (121238504).

128820376 is a wasteful number, since it uses less digits than its factorization.

128820376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1551 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128820376 is about 11349.9064313324. The cubic root of 128820376 is about 505.0428039397.

The spelling of 128820376 in words is "one hundred twenty-eight million, eight hundred twenty thousand, three hundred seventy-six".