78765234 has 16 divisors (see below), whose sum is σ = 162612480. Its totient is φ = 25408080.

The previous prime is 78765221. The next prime is 78765251. The reversal of 78765234 is 43256787.

It is an alternating number because its digits alternate between odd and even.

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, 211549 + ... + 211920.

It is an arithmetic number, because the mean of its divisors is an integer number (10163280).

Almost surely, 2^78765234 is an apocalyptic number.

78765234 is an abundant number, since it is smaller than the sum of its proper divisors (83847246).

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

78765234 is a wasteful number, since it uses less digits than its factorization.

78765234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423505.

The product of its digits is 282240, while the sum is 42.

The square root of 78765234 is about 8874.9779718036. The cubic root of 78765234 is about 428.6585815455.

The spelling of 78765234 in words is "seventy-eight million, seven hundred sixty-five thousand, two hundred thirty-four".