78780924 has 60 divisors (see below), whose sum is σ = 218078784. Its totient is φ = 24713856.

The previous prime is 78780901. The next prime is 78780971. The reversal of 78780924 is 42908787.

It is a self number, because there is not a number n which added to its sum of digits gives 78780924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1644 + ... + 12659.

Almost surely, 2^78780924 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 78780924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109039392).

78780924 is an abundant number, since it is smaller than the sum of its proper divisors (139297860).

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

78780924 is a wasteful number, since it uses less digits than its factorization.

78780924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14336 (or 14325 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 78780924 is about 8875.8618736436. The cubic root of 78780924 is about 428.6870425228.

The spelling of 78780924 in words is "seventy-eight million, seven hundred eighty thousand, nine hundred twenty-four".