78407676 has 60 divisors (see below), whose sum is σ = 206566360. Its totient is φ = 25932960.

The previous prime is 78407657. The next prime is 78407683. The reversal of 78407676 is 67670487.

It is a super-2 number, since 2×78407676² = 12295527311441952, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 44166 + ... + 45906.

Almost surely, 2^78407676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78407676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103283180).

78407676 is an abundant number, since it is smaller than the sum of its proper divisors (128158684).

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

78407676 is a wasteful number, since it uses less digits than its factorization.

78407676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 78407676 is about 8854.8108957786. The cubic root of 78407676 is about 428.0089598381.

The spelling of 78407676 in words is "seventy-eight million, four hundred seven thousand, six hundred seventy-six".