128878310 has 48 divisors (see below), whose sum is σ = 261022608. Its totient is φ = 45756480.

The previous prime is 128878301. The next prime is 128878313. The reversal of 128878310 is 13878821.

It is a super-2 number, since 2×128878310² = 33219237576912200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128878313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50792 + ... + 53268.

It is an arithmetic number, because the mean of its divisors is an integer number (5437971).

Almost surely, 2^128878310 is an apocalyptic number.

128878310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128878310 is an abundant number, since it is smaller than the sum of its proper divisors (132144298).

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

128878310 is a wasteful number, since it uses less digits than its factorization.

128878310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549 (or 2538 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 128878310 is about 11352.4583240812. The cubic root of 128878310 is about 505.1185030529.

The spelling of 128878310 in words is "one hundred twenty-eight million, eight hundred seventy-eight thousand, three hundred ten".