78760440 has 96 divisors (see below), whose sum is σ = 279255600. Its totient is φ = 19092480.

The previous prime is 78760421. The next prime is 78760471. The reversal of 78760440 is 4406787.

It is a happy number.

78760440 is a `hidden beast` number, since 7 + 8 + 7 + 604 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 78760395 and 78760404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5985 + ... + 13904.

Almost surely, 2^78760440 is an apocalyptic number.

It is an amenable number.

78760440 is an abundant number, since it is smaller than the sum of its proper divisors (200495160).

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

78760440 is a wasteful number, since it uses less digits than its factorization.

78760440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19917 (or 19910 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 78760440 is about 8874.7078825165. The cubic root of 78760440 is about 428.6498846842.

The spelling of 78760440 in words is "seventy-eight million, seven hundred sixty thousand, four hundred forty".