72159387 has 8 divisors (see below), whose sum is σ = 96360720. Its totient is φ = 48032160.

The previous prime is 72159383. The next prime is 72159391. The reversal of 72159387 is 78395127.

It is an interprime number because it is at equal distance from previous prime (72159383) and next prime (72159391).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72159387 - 2² = 72159383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72159383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16212 + ... + 20177.

It is an arithmetic number, because the mean of its divisors is an integer number (12045090).

Almost surely, 2^72159387 is an apocalyptic number.

72159387 is a deficient number, since it is larger than the sum of its proper divisors (24201333).

72159387 is a wasteful number, since it uses less digits than its factorization.

72159387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37053.

The product of its digits is 105840, while the sum is 42.

The square root of 72159387 is about 8494.6681512582. The cubic root of 72159387 is about 416.3235182934.

The spelling of 72159387 in words is "seventy-two million, one hundred fifty-nine thousand, three hundred eighty-seven".