72724942 has 8 divisors (see below), whose sum is σ = 113830416. Its totient is φ = 34781472.

The previous prime is 72724931. The next prime is 72724961. The reversal of 72724942 is 24942727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790443 + ... + 790534.

It is an arithmetic number, because the mean of its divisors is an integer number (14228802).

Almost surely, 2^72724942 is an apocalyptic number.

72724942 is a deficient number, since it is larger than the sum of its proper divisors (41105474).

72724942 is a wasteful number, since it uses less digits than its factorization.

72724942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581002.

The product of its digits is 56448, while the sum is 37.

The square root of 72724942 is about 8527.8920021304. The cubic root of 72724942 is about 417.4083454247.

The spelling of 72724942 in words is "seventy-two million, seven hundred twenty-four thousand, nine hundred forty-two".