78628524 has 96 divisors (see below), whose sum is σ = 207728640. Its totient is φ = 22982400.

The previous prime is 78628523. The next prime is 78628531. The reversal of 78628524 is 42582687.

It is a happy number.

78628524 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

78628524 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (78628523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 343242 + ... + 343470.

It is an arithmetic number, because the mean of its divisors is an integer number (2163840).

Almost surely, 2^78628524 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 78628524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103864320).

78628524 is an abundant number, since it is smaller than the sum of its proper divisors (129100116).

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

78628524 is a wasteful number, since it uses less digits than its factorization.

78628524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 78628524 is about 8867.2726359349. The cubic root of 78628524 is about 428.4104354669.

The spelling of 78628524 in words is "seventy-eight million, six hundred twenty-eight thousand, five hundred twenty-four".