78523374 has 16 divisors (see below), whose sum is σ = 166285008. Its totient is φ = 24634752.

The previous prime is 78523351. The next prime is 78523433. The reversal of 78523374 is 47332587.

It is a Curzon number.

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, 384817 + ... + 385020.

It is an arithmetic number, because the mean of its divisors is an integer number (10392813).

Almost surely, 2^78523374 is an apocalyptic number.

78523374 is an abundant number, since it is smaller than the sum of its proper divisors (87761634).

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

78523374 is a wasteful number, since it uses less digits than its factorization.

78523374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769859.

The product of its digits is 141120, while the sum is 39.

The square root of 78523374 is about 8861.3415462897. The cubic root of 78523374 is about 428.2193790472.

The spelling of 78523374 in words is "seventy-eight million, five hundred twenty-three thousand, three hundred seventy-four".