78423294 has 16 divisors (see below), whose sum is σ = 157010832. Its totient is φ = 26113728.

The previous prime is 78423277. The next prime is 78423311. The reversal of 78423294 is 49232487.

It is an interprime number because it is at equal distance from previous prime (78423277) and next prime (78423311).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129 + ... + 12524.

It is an arithmetic number, because the mean of its divisors is an integer number (9813177).

Almost surely, 2^78423294 is an apocalyptic number.

78423294 is an abundant number, since it is smaller than the sum of its proper divisors (78587538).

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

78423294 is a wasteful number, since it uses less digits than its factorization.

78423294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13691.

The product of its digits is 96768, while the sum is 39.

The square root of 78423294 is about 8855.6927453475. The cubic root of 78423294 is about 428.0373762742.

The spelling of 78423294 in words is "seventy-eight million, four hundred twenty-three thousand, two hundred ninety-four".