72339678 has 24 divisors (see below), whose sum is σ = 161793216. Its totient is φ = 23335200.

The previous prime is 72339671. The next prime is 72339689. The reversal of 72339678 is 87693327.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72339671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64263 + ... + 65378.

It is an arithmetic number, because the mean of its divisors is an integer number (6741384).

Almost surely, 2^72339678 is an apocalyptic number.

72339678 is an abundant number, since it is smaller than the sum of its proper divisors (89453538).

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

72339678 is a wasteful number, since it uses less digits than its factorization.

72339678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129680 (or 129677 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 72339678 is about 8505.2735405747. The cubic root of 72339678 is about 416.6699595118.

It can be divided in two parts, 723 and 39678, that added together give a square (40401 = 201²).

The spelling of 72339678 in words is "seventy-two million, three hundred thirty-nine thousand, six hundred seventy-eight".