78460886 has 32 divisors (see below), whose sum is σ = 137479680. Its totient is φ = 32890176.

The previous prime is 78460883. The next prime is 78460897. The reversal of 78460886 is 68806487.

It is a happy number.

It is a super-2 number, since 2×78460886² = 12312221263809992, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 78460886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78460883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218375 + ... + 218733.

It is an arithmetic number, because the mean of its divisors is an integer number (4296240).

Almost surely, 2^78460886 is an apocalyptic number.

78460886 is a deficient number, since it is larger than the sum of its proper divisors (59018794).

78460886 is a wasteful number, since it uses less digits than its factorization.

78460886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 78460886 is about 8857.8149675865. The cubic root of 78460886 is about 428.1057582131.

The spelling of 78460886 in words is "seventy-eight million, four hundred sixty thousand, eight hundred eighty-six".