78507480 has 32 divisors (see below), whose sum is σ = 235522800. Its totient is φ = 20935296.

The previous prime is 78507461. The next prime is 78507491. The reversal of 78507480 is 8470587.

It is a congruent number.

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, 326995 + ... + 327234.

Almost surely, 2^78507480 is an apocalyptic number.

It is an amenable number.

78507480 is an abundant number, since it is smaller than the sum of its proper divisors (157015320).

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

78507480 is a wasteful number, since it uses less digits than its factorization.

78507480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654243 (or 654239 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 78507480 is about 8860.4446841002. Note that the first 3 decimals coincide. The cubic root of 78507480 is about 428.1904849837.

It can be divided in two parts, 78507 and 480, that added together give a palindrome (78987).

The spelling of 78507480 in words is "seventy-eight million, five hundred seven thousand, four hundred eighty".