78679872 has 84 divisors (see below), whose sum is σ = 235366560. Its totient is φ = 25082112.

The previous prime is 78679847. The next prime is 78679873. The reversal of 78679872 is 27897687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78679873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10279 + ... + 16217.

Almost surely, 2^78679872 is an apocalyptic number.

78679872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78679872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117683280).

78679872 is an abundant number, since it is smaller than the sum of its proper divisors (156686688).

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

78679872 is a wasteful number, since it uses less digits than its factorization.

78679872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980 (or 5967 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 78679872 is about 8870.1675294213. The cubic root of 78679872 is about 428.5036723361.

The spelling of 78679872 in words is "seventy-eight million, six hundred seventy-nine thousand, eight hundred seventy-two".