78876220 has 24 divisors (see below), whose sum is σ = 174358800. Its totient is φ = 29889792.

The previous prime is 78876211. The next prime is 78876221. The reversal of 78876220 is 2267887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78876221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103405 + ... + 104164.

It is an arithmetic number, because the mean of its divisors is an integer number (7264950).

Almost surely, 2^78876220 is an apocalyptic number.

It is an amenable number.

78876220 is an abundant number, since it is smaller than the sum of its proper divisors (95482580).

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

78876220 is a wasteful number, since it uses less digits than its factorization.

78876220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207597 (or 207595 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 78876220 is about 8881.2285186229. The cubic root of 78876220 is about 428.8598241953.

The spelling of 78876220 in words is "seventy-eight million, eight hundred seventy-six thousand, two hundred twenty".