78488592 has 240 divisors, whose sum is σ = 270732672. Its totient is φ = 19353600.

The previous prime is 78488569. The next prime is 78488593. The reversal of 78488592 is 29588487.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (78488593) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 519717 + ... + 519867.

Almost surely, 2^78488592 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 78488592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135366336).

78488592 is an abundant number, since it is smaller than the sum of its proper divisors (192244080).

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

78488592 is a wasteful number, since it uses less digits than its factorization.

78488592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 193 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 78488592 is about 8859.3787592585. The cubic root of 78488592 is about 428.1561429882.

The spelling of 78488592 in words is "seventy-eight million, four hundred eighty-eight thousand, five hundred ninety-two".