78043956 has 12 divisors (see below), whose sum is σ = 182102592. Its totient is φ = 26014648.

The previous prime is 78043921. The next prime is 78043967. The reversal of 78043956 is 65934087.

It is a happy number.

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

It is a congruent number.

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, 3251820 + ... + 3251843.

It is an arithmetic number, because the mean of its divisors is an integer number (15175216).

Almost surely, 2^78043956 is an apocalyptic number.

It is an amenable number.

78043956 is an abundant number, since it is smaller than the sum of its proper divisors (104058636).

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

78043956 is a wasteful number, since it uses less digits than its factorization.

78043956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6503670 (or 6503668 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 78043956 is about 8834.2490342983. The cubic root of 78043956 is about 427.3461133479.

The spelling of 78043956 in words is "seventy-eight million, forty-three thousand, nine hundred fifty-six".