72831339 has 16 divisors (see below), whose sum is σ = 123312640. Its totient is φ = 41617800.

The previous prime is 72831331. The next prime is 72831347. The reversal of 72831339 is 93313827.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72831331) and next prime (72831347).

It is not a de Polignac number, because 72831339 - 2³ = 72831331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72831331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192487 + ... + 192864.

It is an arithmetic number, because the mean of its divisors is an integer number (7707040).

Almost surely, 2^72831339 is an apocalyptic number.

72831339 is a deficient number, since it is larger than the sum of its proper divisors (50481301).

72831339 is a wasteful number, since it uses less digits than its factorization.

72831339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385367 (or 385361 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 72831339 is about 8534.1278992056. The cubic root of 72831339 is about 417.6118031576.

The spelling of 72831339 in words is "seventy-two million, eight hundred thirty-one thousand, three hundred thirty-nine".