878640896 has 36 divisors (see below), whose sum is σ = 2004403632. Its totient is φ = 376559616.

The previous prime is 878640859. The next prime is 878640901. The reversal of 878640896 is 698046878.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243365 + ... + 246948.

Almost surely, 2^878640896 is an apocalyptic number.

It is an amenable number.

878640896 is an abundant number, since it is smaller than the sum of its proper divisors (1125762736).

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

878640896 is an equidigital number, since it uses as much as digits as its factorization.

878640896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490336 (or 490322 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 878640896 is about 29641.8774034304. The cubic root of 878640896 is about 957.7903810149.

The spelling of 878640896 in words is "eight hundred seventy-eight million, six hundred forty thousand, eight hundred ninety-six".