78735456 has 48 divisors (see below), whose sum is σ = 229647600. Its totient is φ = 26244864.

The previous prime is 78735439. The next prime is 78735469. The reversal of 78735456 is 65453787.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 44701 + ... + 46428.

It is an arithmetic number, because the mean of its divisors is an integer number (4784325).

Almost surely, 2^78735456 is an apocalyptic number.

It is an amenable number.

78735456 is an abundant number, since it is smaller than the sum of its proper divisors (150912144).

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

78735456 is a wasteful number, since it uses less digits than its factorization.

78735456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91148 (or 91134 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 78735456 is about 8873.3001752448. The cubic root of 78735456 is about 428.6045551537.

The spelling of 78735456 in words is "seventy-eight million, seven hundred thirty-five thousand, four hundred fifty-six".