878506938 has 32 divisors (see below), whose sum is σ = 1953720000. Its totient is φ = 292613328.

The previous prime is 878506931. The next prime is 878506949. The reversal of 878506938 is 839605878.

It is a happy number.

It is a super-2 number, since 2×878506938² = 1543548880228271688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (878506931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75520 + ... + 86372.

It is an arithmetic number, because the mean of its divisors is an integer number (61053750).

Almost surely, 2^878506938 is an apocalyptic number.

878506938 is an abundant number, since it is smaller than the sum of its proper divisors (1075213062).

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

878506938 is a wasteful number, since it uses less digits than its factorization.

878506938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12363 (or 12357 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 878506938 is about 29639.6177100853. The cubic root of 878506938 is about 957.7417034853.

The spelling of 878506938 in words is "eight hundred seventy-eight million, five hundred six thousand, nine hundred thirty-eight".