72249039 has 24 divisors (see below), whose sum is σ = 110214000. Its totient is φ = 45480960.

The previous prime is 72249029. The next prime is 72249059. The reversal of 72249039 is 93094227.

It is not a de Polignac number, because 72249039 - 2¹⁵ = 72216271 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72248994 and 72249012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72249019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76309 + ... + 77249.

It is an arithmetic number, because the mean of its divisors is an integer number (4592250).

Almost surely, 2^72249039 is an apocalyptic number.

72249039 is a deficient number, since it is larger than the sum of its proper divisors (37964961).

72249039 is a wasteful number, since it uses less digits than its factorization.

72249039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 1412 counting only the distinct ones).

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

The square root of 72249039 is about 8499.9434704003. The cubic root of 72249039 is about 416.4958626497.

The spelling of 72249039 in words is "seventy-two million, two hundred forty-nine thousand, thirty-nine".