72340668 has 48 divisors (see below), whose sum is σ = 188230560. Its totient is φ = 24026112.

The previous prime is 72340651. The next prime is 72340669. The reversal of 72340668 is 86604327.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72340669) 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, 33180 + ... + 35292.

It is an arithmetic number, because the mean of its divisors is an integer number (3921470).

Almost surely, 2^72340668 is an apocalyptic number.

It is an amenable number.

72340668 is an abundant number, since it is smaller than the sum of its proper divisors (115889892).

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

72340668 is a wasteful number, since it uses less digits than its factorization.

72340668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443 (or 2435 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 72340668 is about 8505.3317395620. The cubic root of 72340668 is about 416.6718602730.

The spelling of 72340668 in words is "seventy-two million, three hundred forty thousand, six hundred sixty-eight".