128356926 has 48 divisors (see below), whose sum is σ = 268967952. Its totient is φ = 40830720.

The previous prime is 128356901. The next prime is 128356933. The reversal of 128356926 is 629653821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651460 + ... + 651656.

It is an arithmetic number, because the mean of its divisors is an integer number (5603499).

Almost surely, 2^128356926 is an apocalyptic number.

128356926 is an abundant number, since it is smaller than the sum of its proper divisors (140611026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128356926 is a wasteful number, since it uses less digits than its factorization.

128356926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 346 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 128356926 is about 11329.4715675534. The cubic root of 128356926 is about 504.4364212439.

The spelling of 128356926 in words is "one hundred twenty-eight million, three hundred fifty-six thousand, nine hundred twenty-six".