878315652 has 36 divisors (see below), whose sum is σ = 2222965836. Its totient is φ = 292405440.

The previous prime is 878315609. The next prime is 878315671. The reversal of 878315652 is 256513878.

878315652 is a `hidden beast` number, since 8 + 7 + 83 + 1 + 565 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 505980036 + 372335616 = 22494^2 + 19296^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 878315598 and 878315607.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14698 + ... + 44414.

It is an arithmetic number, because the mean of its divisors is an integer number (61749051).

Almost surely, 2^878315652 is an apocalyptic number.

It is an amenable number.

878315652 is an abundant number, since it is smaller than the sum of its proper divisors (1344650184).

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

878315652 is a wasteful number, since it uses less digits than its factorization.

878315652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30548 (or 30543 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 878315652 is about 29636.3906709302. The cubic root of 878315652 is about 957.6721855831.

The spelling of 878315652 in words is "eight hundred seventy-eight million, three hundred fifteen thousand, six hundred fifty-two".