72472163 has 4 divisors (see below), whose sum is σ = 72840240. Its totient is φ = 72104088.

The previous prime is 72472129. The next prime is 72472193. The reversal of 72472163 is 36127427.

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

It is a cyclic number.

It is not a de Polignac number, because 72472163 - 2⁸ = 72471907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72472123) 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, 183743 + ... + 184136.

It is an arithmetic number, because the mean of its divisors is an integer number (18210060).

Almost surely, 2^72472163 is an apocalyptic number.

72472163 is a deficient number, since it is larger than the sum of its proper divisors (368077).

72472163 is a wasteful number, since it uses less digits than its factorization.

72472163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368076.

The product of its digits is 14112, while the sum is 32.

The square root of 72472163 is about 8513.0583810990. The cubic root of 72472163 is about 416.9241715639.

The spelling of 72472163 in words is "seventy-two million, four hundred seventy-two thousand, one hundred sixty-three".