78088518 has 48 divisors (see below), whose sum is σ = 182473200. Its totient is φ = 24053760.

The previous prime is 78088513. The next prime is 78088547. The reversal of 78088518 is 81588087.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78088513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11238 + ... + 16806.

It is an arithmetic number, because the mean of its divisors is an integer number (3801525).

Almost surely, 2^78088518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78088518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91236600).

78088518 is an abundant number, since it is smaller than the sum of its proper divisors (104384682).

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

78088518 is a wasteful number, since it uses less digits than its factorization.

78088518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5637 (or 5634 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 45.

The square root of 78088518 is about 8836.7707902831. The cubic root of 78088518 is about 427.4274340768.

It can be divided in two parts, 78088 and 518, that added together give a triangular number (78606 = T₃₉₆).

The spelling of 78088518 in words is "seventy-eight million, eighty-eight thousand, five hundred eighteen".