78522336 has 72 divisors (see below), whose sum is σ = 228088224. Its totient is φ = 25612800.

The previous prime is 78522329. The next prime is 78522361. The reversal of 78522336 is 63322587.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 78522336.

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 11 ways as a sum of consecutive naturals, for example, 10636 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (3167892).

Almost surely, 2^78522336 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 78522336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114044112).

78522336 is an abundant number, since it is smaller than the sum of its proper divisors (149565888).

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

78522336 is a wasteful number, since it uses less digits than its factorization.

78522336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864 (or 5853 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 78522336 is about 8861.2829770863. The cubic root of 78522336 is about 428.2174921625.

The spelling of 78522336 in words is "seventy-eight million, five hundred twenty-two thousand, three hundred thirty-six".