72156895 has 8 divisors (see below), whose sum is σ = 86745456. Its totient is φ = 57620736.

The previous prime is 72156893. The next prime is 72156899. The reversal of 72156895 is 59865127.

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

It is a cyclic number.

It is not a de Polignac number, because 72156895 - 2¹ = 72156893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10002 + ... + 15631.

It is an arithmetic number, because the mean of its divisors is an integer number (10843182).

Almost surely, 2^72156895 is an apocalyptic number.

72156895 is a deficient number, since it is larger than the sum of its proper divisors (14588561).

72156895 is a wasteful number, since it uses less digits than its factorization.

72156895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26201.

The product of its digits is 151200, while the sum is 43.

The square root of 72156895 is about 8494.5214697474. The cubic root of 72156895 is about 416.3187257077.

The spelling of 72156895 in words is "seventy-two million, one hundred fifty-six thousand, eight hundred ninety-five".