72939716 has 24 divisors (see below), whose sum is σ = 133574784. Its totient is φ = 34784640.

The previous prime is 72939709. The next prime is 72939719. The reversal of 72939716 is 61793927.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72939719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38921 + ... + 40751.

It is an arithmetic number, because the mean of its divisors is an integer number (5565616).

Almost surely, 2^72939716 is an apocalyptic number.

It is an amenable number.

72939716 is a deficient number, since it is larger than the sum of its proper divisors (60635068).

72939716 is a wasteful number, since it uses less digits than its factorization.

72939716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2289 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 72939716 is about 8540.4751624251. The cubic root of 72939716 is about 417.8188435334.

The spelling of 72939716 in words is "seventy-two million, nine hundred thirty-nine thousand, seven hundred sixteen".