78624750 has 64 divisors (see below), whose sum is σ = 198881280. Its totient is φ = 20685600.

The previous prime is 78624743. The next prime is 78624751. The reversal of 78624750 is 5742687.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78624699 and 78624708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78624751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58587 + ... + 59913.

It is an arithmetic number, because the mean of its divisors is an integer number (3107520).

Almost surely, 2^78624750 is an apocalyptic number.

78624750 is the 4740-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78624750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99440640).

78624750 is an abundant number, since it is smaller than the sum of its proper divisors (120256530).

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

78624750 is a wasteful number, since it uses less digits than its factorization.

78624750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1416 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 78624750 is about 8867.0598283760. The cubic root of 78624750 is about 428.4035810975.

The spelling of 78624750 in words is "seventy-eight million, six hundred twenty-four thousand, seven hundred fifty".