78855234 has 32 divisors (see below), whose sum is σ = 163944000. Its totient is φ = 25255104.

The previous prime is 78855233. The next prime is 78855239. The reversal of 78855234 is 43255887.

It is not an unprimeable number, because it can be changed into a prime (78855233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38857 + ... + 40835.

It is an arithmetic number, because the mean of its divisors is an integer number (5123250).

Almost surely, 2^78855234 is an apocalyptic number.

78855234 is an abundant number, since it is smaller than the sum of its proper divisors (85088766).

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

78855234 is a wasteful number, since it uses less digits than its factorization.

78855234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its digits is 268800, while the sum is 42.

The square root of 78855234 is about 8880.0469593353. The cubic root of 78855234 is about 428.8217863237.

The spelling of 78855234 in words is "seventy-eight million, eight hundred fifty-five thousand, two hundred thirty-four".