78534956 has 12 divisors (see below), whose sum is σ = 137960592. Its totient is φ = 39117648.

The previous prime is 78534947. The next prime is 78534971. The reversal of 78534956 is 65943587.

It is a self number, because there is not a number n which added to its sum of digits gives 78534956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36275 + ... + 38378.

It is an arithmetic number, because the mean of its divisors is an integer number (11496716).

Almost surely, 2^78534956 is an apocalyptic number.

It is an amenable number.

78534956 is a deficient number, since it is larger than the sum of its proper divisors (59425636).

78534956 is a wasteful number, since it uses less digits than its factorization.

78534956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74920 (or 74918 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The square root of 78534956 is about 8861.9950349794. The cubic root of 78534956 is about 428.2404317723.

The spelling of 78534956 in words is "seventy-eight million, five hundred thirty-four thousand, nine hundred fifty-six".