878512281 has 16 divisors (see below), whose sum is σ = 1240899264. Its totient is φ = 550936064.

The previous prime is 878512277. The next prime is 878512319. The reversal of 878512281 is 182215878.

It is a cyclic number.

It is not a de Polignac number, because 878512281 - 2² = 878512277 is a prime.

It is a super-2 number, since 2×878512281² = 1543567655735645922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878512211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138526 + ... + 144728.

It is an arithmetic number, because the mean of its divisors is an integer number (77556204).

Almost surely, 2^878512281 is an apocalyptic number.

It is an amenable number.

878512281 is a deficient number, since it is larger than the sum of its proper divisors (362386983).

878512281 is a wasteful number, since it uses less digits than its factorization.

878512281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its digits is 71680, while the sum is 42.

The square root of 878512281 is about 29639.7078426897. The cubic root of 878512281 is about 957.7436451142.

The spelling of 878512281 in words is "eight hundred seventy-eight million, five hundred twelve thousand, two hundred eighty-one".