78719456 has 24 divisors (see below), whose sum is σ = 160324920. Its totient is φ = 38002048.

The previous prime is 78719449. The next prime is 78719479. The reversal of 78719456 is 65491787.

It is a self number, because there is not a number n which added to its sum of digits gives 78719456.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41486 + ... + 43341.

It is an arithmetic number, because the mean of its divisors is an integer number (6680205).

Almost surely, 2^78719456 is an apocalyptic number.

It is an amenable number.

78719456 is an abundant number, since it is smaller than the sum of its proper divisors (81605464).

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

78719456 is a wasteful number, since it uses less digits than its factorization.

78719456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84866 (or 84858 counting only the distinct ones).

The product of its digits is 423360, while the sum is 47.

The square root of 78719456 is about 8872.3985483070. The cubic root of 78719456 is about 428.5755206382.

The spelling of 78719456 in words is "seventy-eight million, seven hundred nineteen thousand, four hundred fifty-six".