78562944 has 96 divisors (see below), whose sum is σ = 231042240. Its totient is φ = 25612800.

The previous prime is 78562909. The next prime is 78562961. The reversal of 78562944 is 44926587.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 78562944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53419 + ... + 54869.

It is an arithmetic number, because the mean of its divisors is an integer number (2406690).

Almost surely, 2^78562944 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 78562944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115521120).

78562944 is an abundant number, since it is smaller than the sum of its proper divisors (152479296).

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

78562944 is a wasteful number, since it uses less digits than its factorization.

78562944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1503 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 78562944 is about 8863.5739969834. The cubic root of 78562944 is about 428.2912973160.

The spelling of 78562944 in words is "seventy-eight million, five hundred sixty-two thousand, nine hundred forty-four".