878435620 has 12 divisors (see below), whose sum is σ = 1844714844. Its totient is φ = 351374240.

The previous prime is 878435617. The next prime is 878435627. The reversal of 878435620 is 26534878.

It can be written as a sum of positive squares in 2 ways, for example, as 236421376 + 642014244 = 15376^2 + 25338^2 .

It is not an unprimeable number, because it can be changed into a prime (878435627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21960871 + ... + 21960910.

It is an arithmetic number, because the mean of its divisors is an integer number (153726237).

Almost surely, 2^878435620 is an apocalyptic number.

It is an amenable number.

878435620 is an abundant number, since it is smaller than the sum of its proper divisors (966279224).

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

878435620 is a wasteful number, since it uses less digits than its factorization.

878435620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43921790 (or 43921788 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 878435620 is about 29638.4145999748. The cubic root of 878435620 is about 957.7157860002.

The spelling of 878435620 in words is "eight hundred seventy-eight million, four hundred thirty-five thousand, six hundred twenty".