78826836 has 48 divisors (see below), whose sum is σ = 201313728. Its totient is φ = 23808000.

The previous prime is 78826817. The next prime is 78826837. The reversal of 78826836 is 63862887.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78826837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 48436 + ... + 50036.

It is an arithmetic number, because the mean of its divisors is an integer number (4194036).

Almost surely, 2^78826836 is an apocalyptic number.

It is an amenable number.

78826836 is an abundant number, since it is smaller than the sum of its proper divisors (122486892).

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

78826836 is a wasteful number, since it uses less digits than its factorization.

78826836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1990 counting only the distinct ones).

The product of its digits is 774144, while the sum is 48.

The square root of 78826836 is about 8878.4478373193. The cubic root of 78826836 is about 428.7703031919.

The spelling of 78826836 in words is "seventy-eight million, eight hundred twenty-six thousand, eight hundred thirty-six".