78013456 has 20 divisors (see below), whose sum is σ = 154004652. Its totient is φ = 38270336.

The previous prime is 78013423. The next prime is 78013469. The reversal of 78013456 is 65431087.

It can be written as a sum of positive squares in 2 ways, for example, as 51840000 + 26173456 = 7200^2 + 5116^2 .

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, 45151 + ... + 46846.

Almost surely, 2^78013456 is an apocalyptic number.

It is an amenable number.

78013456 is a deficient number, since it is larger than the sum of its proper divisors (75991196).

78013456 is a wasteful number, since it uses less digits than its factorization.

78013456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92058 (or 92052 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 78013456 is about 8832.5226294644. The cubic root of 78013456 is about 427.2904363704.

The spelling of 78013456 in words is "seventy-eight million, thirteen thousand, four hundred fifty-six".