72089847 has 24 divisors (see below), whose sum is σ = 105772784. Its totient is φ = 47309184.

The previous prime is 72089839. The next prime is 72089851. The reversal of 72089847 is 74898027.

It is not a de Polignac number, because 72089847 - 2³ = 72089839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72089837) 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 23 ways as a sum of consecutive naturals, for example, 230163 + ... + 230475.

Almost surely, 2^72089847 is an apocalyptic number.

72089847 is a deficient number, since it is larger than the sum of its proper divisors (33682937).

72089847 is a wasteful number, since it uses less digits than its factorization.

72089847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 72089847 is about 8490.5740088642. The cubic root of 72089847 is about 416.1897383205.

The spelling of 72089847 in words is "seventy-two million, eighty-nine thousand, eight hundred forty-seven".