128886884 has 24 divisors (see below), whose sum is σ = 262640448. Its totient is φ = 54194400.

The previous prime is 128886883. The next prime is 128886893. The reversal of 128886884 is 488688821.

It is a super-2 number, since 2×128886884² = 33223657734458912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is not an unprimeable number, because it can be changed into a prime (128886883) 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, 41942 + ... + 44909.

It is an arithmetic number, because the mean of its divisors is an integer number (10943352).

Almost surely, 2^128886884 is an apocalyptic number.

128886884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

128886884 is an abundant number, since it is smaller than the sum of its proper divisors (133753564).

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

128886884 is a wasteful number, since it uses less digits than its factorization.

128886884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86915 (or 86913 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 53.

The square root of 128886884 is about 11352.8359452605. The cubic root of 128886884 is about 505.1297042913.

The spelling of 128886884 in words is "one hundred twenty-eight million, eight hundred eighty-six thousand, eight hundred eighty-four".