72081339 has 8 divisors (see below), whose sum is σ = 104845632. Its totient is φ = 43685640.

The previous prime is 72081329. The next prime is 72081349. The reversal of 72081339 is 93318027.

It is an interprime number because it is at equal distance from previous prime (72081329) and next prime (72081349).

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

It is a de Polignac number, because none of the positive numbers 2^k-72081339 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2184283 = 72081339 / (7 + 2 + 0 + 8 + 1 + 3 + 3 + 9).

It is not an unprimeable number, because it can be changed into a prime (72081329) 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, 1092109 + ... + 1092174.

It is an arithmetic number, because the mean of its divisors is an integer number (13105704).

Almost surely, 2^72081339 is an apocalyptic number.

72081339 is a deficient number, since it is larger than the sum of its proper divisors (32764293).

72081339 is a wasteful number, since it uses less digits than its factorization.

72081339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184297.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 72081339 is about 8490.0729678843. The cubic root of 72081339 is about 416.1733648562.

The spelling of 72081339 in words is "seventy-two million, eighty-one thousand, three hundred thirty-nine".