78801416 has 16 divisors (see below), whose sum is σ = 151746540. Its totient is φ = 38335680.

The previous prime is 78801377. The next prime is 78801431. The reversal of 78801416 is 61410887.

It can be written as a sum of positive squares in 2 ways, for example, as 58461316 + 20340100 = 7646^2 + 4510^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132815 + ... + 133406.

Almost surely, 2^78801416 is an apocalyptic number.

It is an amenable number.

78801416 is a deficient number, since it is larger than the sum of its proper divisors (72945124).

78801416 is a wasteful number, since it uses less digits than its factorization.

78801416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266264 (or 266260 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 78801416 is about 8877.0161653565. The cubic root of 78801416 is about 428.7242084291.

The spelling of 78801416 in words is "seventy-eight million, eight hundred one thousand, four hundred sixteen".