78783356 has 12 divisors (see below), whose sum is σ = 137985960. Its totient is φ = 39358800.

The previous prime is 78783319. The next prime is 78783359. The reversal of 78783356 is 65338787.

It is a self number, because there is not a number n which added to its sum of digits gives 78783356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78783359) 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 3 ways as a sum of consecutive naturals, for example, 2366 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (11498830).

Almost surely, 2^78783356 is an apocalyptic number.

It is an amenable number.

78783356 is a deficient number, since it is larger than the sum of its proper divisors (59202604).

78783356 is a wasteful number, since it uses less digits than its factorization.

78783356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16444 (or 16442 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 78783356 is about 8875.9988733663. The cubic root of 78783356 is about 428.6914537267.

The spelling of 78783356 in words is "seventy-eight million, seven hundred eighty-three thousand, three hundred fifty-six".