72139333 has 8 divisors (see below), whose sum is σ = 86784320. Its totient is φ = 58579200.

The previous prime is 72139321. The next prime is 72139343. The reversal of 72139333 is 33393127.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72139333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72139295 and 72139304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72139303) 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, 271068 + ... + 271333.

It is an arithmetic number, because the mean of its divisors is an integer number (10848040).

Almost surely, 2^72139333 is an apocalyptic number.

It is an amenable number.

72139333 is a deficient number, since it is larger than the sum of its proper divisors (14644987).

72139333 is a wasteful number, since it uses less digits than its factorization.

72139333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542427.

The product of its digits is 10206, while the sum is 31.

The square root of 72139333 is about 8493.4876817477. The cubic root of 72139333 is about 416.2849475418.

The spelling of 72139333 in words is "seventy-two million, one hundred thirty-nine thousand, three hundred thirty-three".