72268039 has 4 divisors (see below), whose sum is σ = 76071640. Its totient is φ = 68464440.

The previous prime is 72268033. The next prime is 72268043. The reversal of 72268039 is 93086227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72268039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72267989 and 72268007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72268033) 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 3 ways as a sum of consecutive naturals, for example, 1901772 + ... + 1901809.

It is an arithmetic number, because the mean of its divisors is an integer number (19017910).

Almost surely, 2^72268039 is an apocalyptic number.

72268039 is a deficient number, since it is larger than the sum of its proper divisors (3803601).

72268039 is a wasteful number, since it uses less digits than its factorization.

72268039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803600.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 72268039 is about 8501.0610514218. The cubic root of 72268039 is about 416.5323693766.

The spelling of 72268039 in words is "seventy-two million, two hundred sixty-eight thousand, thirty-nine".