72163263 has 16 divisors (see below), whose sum is σ = 98431200. Its totient is φ = 47009664.

The previous prime is 72163237. The next prime is 72163277. The reversal of 72163263 is 36236127.

It is not a de Polignac number, because 72163263 - 2⁶ = 72163199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72163263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72163363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45813 + ... + 47361.

It is an arithmetic number, because the mean of its divisors is an integer number (6151950).

Almost surely, 2^72163263 is an apocalyptic number.

72163263 is a deficient number, since it is larger than the sum of its proper divisors (26267937).

72163263 is a wasteful number, since it uses less digits than its factorization.

72163263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898.

The product of its digits is 9072, while the sum is 30.

The square root of 72163263 is about 8494.8962913034. The cubic root of 72163263 is about 416.3309723528.

The spelling of 72163263 in words is "seventy-two million, one hundred sixty-three thousand, two hundred sixty-three".