78733944 has 96 divisors (see below), whose sum is σ = 223881840. Its totient is φ = 25920000.

The previous prime is 78733943. The next prime is 78733951. The reversal of 78733944 is 44933787.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78733944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78733943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196144 + ... + 196544.

Almost surely, 2^78733944 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 78733944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111940920).

78733944 is an abundant number, since it is smaller than the sum of its proper divisors (145147896).

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

78733944 is a wasteful number, since it uses less digits than its factorization.

78733944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 507 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 78733944 is about 8873.2149754190. The cubic root of 78733944 is about 428.6018115603.

The spelling of 78733944 in words is "seventy-eight million, seven hundred thirty-three thousand, nine hundred forty-four".