72471339 has 24 divisors (see below), whose sum is σ = 110735040. Its totient is φ = 45545328.

The previous prime is 72471337. The next prime is 72471349. The reversal of 72471339 is 93317427.

It is not a de Polignac number, because 72471339 - 2¹ = 72471337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72471337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37884 + ... + 39750.

It is an arithmetic number, because the mean of its divisors is an integer number (4613960).

Almost surely, 2^72471339 is an apocalyptic number.

72471339 is a deficient number, since it is larger than the sum of its proper divisors (38263701).

72471339 is a wasteful number, since it uses less digits than its factorization.

72471339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2116 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 72471339 is about 8513.0099847234. The cubic root of 72471339 is about 416.9225914316.

The spelling of 72471339 in words is "seventy-two million, four hundred seventy-one thousand, three hundred thirty-nine".