128876284 has 24 divisors (see below), whose sum is σ = 235409328. Its totient is φ = 61676160.

The previous prime is 128876281. The next prime is 128876287. The reversal of 128876284 is 482678821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128876281) and next prime (128876287).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128876281) 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, 1279 + ... + 16105.

It is an arithmetic number, because the mean of its divisors is an integer number (9808722).

Almost surely, 2^128876284 is an apocalyptic number.

It is an amenable number.

128876284 is a deficient number, since it is larger than the sum of its proper divisors (106533044).

128876284 is a wasteful number, since it uses less digits than its factorization.

128876284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14925 (or 14923 counting only the distinct ones).

The product of its digits is 344064, while the sum is 46.

The square root of 128876284 is about 11352.3690919561. The cubic root of 128876284 is about 505.1158561750.

The spelling of 128876284 in words is "one hundred twenty-eight million, eight hundred seventy-six thousand, two hundred eighty-four".