878447632 has 20 divisors (see below), whose sum is σ = 1743505596. Its totient is φ = 428510720.

The previous prime is 878447611. The next prime is 878447657. The reversal of 878447632 is 236744878.

It can be written as a sum of positive squares in 2 ways, for example, as 140564736 + 737882896 = 11856^2 + 27164^2 .

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, 668893 + ... + 670204.

Almost surely, 2^878447632 is an apocalyptic number.

878447632 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

878447632 is a deficient number, since it is larger than the sum of its proper divisors (865057964).

878447632 is a wasteful number, since it uses less digits than its factorization.

878447632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339146 (or 1339140 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 49.

The square root of 878447632 is about 29638.6172417001. The cubic root of 878447632 is about 957.7201513475.

The spelling of 878447632 in words is "eight hundred seventy-eight million, four hundred forty-seven thousand, six hundred thirty-two".