78943356 has 96 divisors (see below), whose sum is σ = 212889600. Its totient is φ = 25280640.

The previous prime is 78943321. The next prime is 78943387. The reversal of 78943356 is 65334987.

Its product of digits (544320) is a multiple of the sum of its prime factors (336).

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 31 ways as a sum of consecutive naturals, for example, 413221 + ... + 413411.

It is an arithmetic number, because the mean of its divisors is an integer number (2217600).

Almost surely, 2^78943356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78943356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106444800).

78943356 is an abundant number, since it is smaller than the sum of its proper divisors (133946244).

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

78943356 is a wasteful number, since it uses less digits than its factorization.

78943356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 328 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 78943356 is about 8885.0073719722. The cubic root of 78943356 is about 428.9814652856.

The spelling of 78943356 in words is "seventy-eight million, nine hundred forty-three thousand, three hundred fifty-six".