78525344 has 48 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 37995264.

The previous prime is 78525313. The next prime is 78525463. The reversal of 78525344 is 44352587.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 78525298 and 78525307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163697 + ... + 164175.

It is an arithmetic number, because the mean of its divisors is an integer number (3326400).

Almost surely, 2^78525344 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 78525344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

78525344 is an abundant number, since it is smaller than the sum of its proper divisors (81141856).

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

78525344 is a wasteful number, since it uses less digits than its factorization.

78525344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645 (or 637 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 78525344 is about 8861.4527025765. The cubic root of 78525344 is about 428.2229600834. Note that the first 3 decimals are identical.

The spelling of 78525344 in words is "seventy-eight million, five hundred twenty-five thousand, three hundred forty-four".