78740014 has 4 divisors (see below), whose sum is σ = 118110024. Its totient is φ = 39370006.

The previous prime is 78739987. The next prime is 78740021. The reversal of 78740014 is 41004787.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19685002 + ... + 19685005.

It is an arithmetic number, because the mean of its divisors is an integer number (29527506).

Almost surely, 2^78740014 is an apocalyptic number.

78740014 is a deficient number, since it is larger than the sum of its proper divisors (39370010).

78740014 is a wasteful number, since it uses less digits than its factorization.

78740014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39370009.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 78740014 is about 8873.5570094523. The cubic root of 78740014 is about 428.6128256414.

The spelling of 78740014 in words is "seventy-eight million, seven hundred forty thousand, fourteen".