878929128 has 96 divisors (see below), whose sum is σ = 2967831360. Its totient is φ = 228291840.

The previous prime is 878929127. The next prime is 878929133. The reversal of 878929128 is 821929878.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (878929123) 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, 73725 + ... + 84812.

It is an arithmetic number, because the mean of its divisors is an integer number (30914910).

Almost surely, 2^878929128 is an apocalyptic number.

878929128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

878929128 is an abundant number, since it is smaller than the sum of its proper divisors (2088902232).

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

878929128 is a wasteful number, since it uses less digits than its factorization.

878929128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158567 (or 158560 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 878929128 is about 29646.7389100387. The cubic root of 878929128 is about 957.8951017098.

It can be divided in two parts, 87892 and 9128, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 878929128 in words is "eight hundred seventy-eight million, nine hundred twenty-nine thousand, one hundred twenty-eight".