78956436 has 24 divisors (see below), whose sum is σ = 198403744. Its totient is φ = 24294240.

The previous prime is 78956417. The next prime is 78956443. The reversal of 78956436 is 63465987.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 252910 + ... + 253221.

Almost surely, 2^78956436 is an apocalyptic number.

It is an amenable number.

78956436 is an abundant number, since it is smaller than the sum of its proper divisors (119447308).

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

78956436 is a wasteful number, since it uses less digits than its factorization.

78956436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506151 (or 506149 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 78956436 is about 8885.7434129059. The cubic root of 78956436 is about 429.0051563977.

The spelling of 78956436 in words is "seventy-eight million, nine hundred fifty-six thousand, four hundred thirty-six".