78979648 has 56 divisors (see below), whose sum is σ = 175016160. Its totient is φ = 35051520.

The previous prime is 78979639. The next prime is 78979651. The reversal of 78979648 is 84697987.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78979592 and 78979601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28968 + ... + 31576.

Almost surely, 2^78979648 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 78979648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87508080).

78979648 is an abundant number, since it is smaller than the sum of its proper divisors (96036512).

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

78979648 is a wasteful number, since it uses less digits than its factorization.

78979648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675 (or 2665 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 58.

The square root of 78979648 is about 8887.0494541214. The cubic root of 78979648 is about 429.0471926248.

The spelling of 78979648 in words is "seventy-eight million, nine hundred seventy-nine thousand, six hundred forty-eight".