878380402 has 8 divisors (see below), whose sum is σ = 1317789036. Its totient is φ = 439117392.

The previous prime is 878380397. The next prime is 878380403. The reversal of 878380402 is 204083878.

It can be written as a sum of positive squares in 2 ways, for example, as 597851401 + 280529001 = 24451^2 + 16749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (878380403) 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, 19813 + ... + 46360.

Almost surely, 2^878380402 is an apocalyptic number.

878380402 is a deficient number, since it is larger than the sum of its proper divisors (439408634).

878380402 is a wasteful number, since it uses less digits than its factorization.

878380402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72812.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 878380402 is about 29637.4830577767. The cubic root of 878380402 is about 957.6957184099.

The spelling of 878380402 in words is "eight hundred seventy-eight million, three hundred eighty thousand, four hundred two".