72871239 has 16 divisors (see below), whose sum is σ = 111893760. Its totient is φ = 41321280.

The previous prime is 72871219. The next prime is 72871247. The reversal of 72871239 is 93217827.

It is not a de Polignac number, because 72871239 - 2⁵ = 72871207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72871197 and 72871206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72871219) 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, 10494 + ... + 15995.

It is an arithmetic number, because the mean of its divisors is an integer number (6993360).

Almost surely, 2^72871239 is an apocalyptic number.

72871239 is a deficient number, since it is larger than the sum of its proper divisors (39022521).

72871239 is a wasteful number, since it uses less digits than its factorization.

72871239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26630.

The product of its digits is 42336, while the sum is 39.

The square root of 72871239 is about 8536.4652520818. The cubic root of 72871239 is about 417.6880508703.

The spelling of 72871239 in words is "seventy-two million, eight hundred seventy-one thousand, two hundred thirty-nine".