72956389 has 16 divisors (see below), whose sum is σ = 80917056. Its totient is φ = 65228800.

The previous prime is 72956383. The next prime is 72956393. The reversal of 72956389 is 98365927.

It is a cyclic number.

It is not a de Polignac number, because 72956389 - 2¹⁵ = 72923621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72956383) 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, 283749 + ... + 284005.

It is an arithmetic number, because the mean of its divisors is an integer number (5057316).

Almost surely, 2^72956389 is an apocalyptic number.

It is an amenable number.

72956389 is a deficient number, since it is larger than the sum of its proper divisors (7960667).

72956389 is a wasteful number, since it uses less digits than its factorization.

72956389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

The product of its digits is 816480, while the sum is 49.

The square root of 72956389 is about 8541.4512232992. The cubic root of 72956389 is about 417.8506769580.

The spelling of 72956389 in words is "seventy-two million, nine hundred fifty-six thousand, three hundred eighty-nine".