72390743 has 12 divisors (see below), whose sum is σ = 77651352. Its totient is φ = 67466880.

The previous prime is 72390733. The next prime is 72390749. The reversal of 72390743 is 34709327.

It is not a de Polignac number, because 72390743 - 2⁴ = 72390727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72390749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29753 + ... + 32093.

It is an arithmetic number, because the mean of its divisors is an integer number (6470946).

Almost surely, 2^72390743 is an apocalyptic number.

72390743 is a deficient number, since it is larger than the sum of its proper divisors (5260609).

72390743 is a wasteful number, since it uses less digits than its factorization.

72390743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482 (or 2465 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 72390743 is about 8508.2749720493. The cubic root of 72390743 is about 416.7679797014.

The spelling of 72390743 in words is "seventy-two million, three hundred ninety thousand, seven hundred forty-three".