78479556 has 12 divisors (see below), whose sum is σ = 183118992. Its totient is φ = 26159848.

The previous prime is 78479537. The next prime is 78479567. The reversal of 78479556 is 65597487.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 78479499 and 78479508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3269970 + ... + 3269993.

It is an arithmetic number, because the mean of its divisors is an integer number (15259916).

Almost surely, 2^78479556 is an apocalyptic number.

It is an amenable number.

78479556 is an abundant number, since it is smaller than the sum of its proper divisors (104639436).

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

78479556 is a wasteful number, since it uses less digits than its factorization.

78479556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539970 (or 6539968 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 51.

The square root of 78479556 is about 8858.8687765425. The cubic root of 78479556 is about 428.1397118641.

The spelling of 78479556 in words is "seventy-eight million, four hundred seventy-nine thousand, five hundred fifty-six".