128885370 has 32 divisors (see below), whose sum is σ = 311065920. Its totient is φ = 34176000.

The previous prime is 128885363. The next prime is 128885371. The reversal of 128885370 is 73588821.

It is a happy number.

It is a super-2 number, since 2×128885370² = 33222877200073800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128885371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6631 + ... + 17370.

It is an arithmetic number, because the mean of its divisors is an integer number (9720810).

Almost surely, 2^128885370 is an apocalyptic number.

128885370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128885370 is an abundant number, since it is smaller than the sum of its proper divisors (182180550).

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

128885370 is a wasteful number, since it uses less digits than its factorization.

128885370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190.

The product of its (nonzero) digits is 107520, while the sum is 42.

The square root of 128885370 is about 11352.7692656902. The cubic root of 128885370 is about 505.1277264087.

The spelling of 128885370 in words is "one hundred twenty-eight million, eight hundred eighty-five thousand, three hundred seventy".