78413814 has 24 divisors (see below), whose sum is σ = 170852760. Its totient is φ = 25990848.

The previous prime is 78413801. The next prime is 78413827. The reversal of 78413814 is 41831487.

It is an interprime number because it is at equal distance from previous prime (78413801) and next prime (78413827).

It is a super-2 number, since 2×78413814² = 12297452452053192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8947 + ... + 15390.

It is an arithmetic number, because the mean of its divisors is an integer number (7118865).

Almost surely, 2^78413814 is an apocalyptic number.

78413814 is an abundant number, since it is smaller than the sum of its proper divisors (92438946).

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

78413814 is a wasteful number, since it uses less digits than its factorization.

78413814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24524 (or 24521 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 78413814 is about 8855.1574802484. The cubic root of 78413814 is about 428.0201281767.

The spelling of 78413814 in words is "seventy-eight million, four hundred thirteen thousand, eight hundred fourteen".