72183823 has 4 divisors (see below), whose sum is σ = 72296728. Its totient is φ = 72070920.

The previous prime is 72183817. The next prime is 72183829. The reversal of 72183823 is 32838127.

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

It is an interprime number because it is at equal distance from previous prime (72183817) and next prime (72183829).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72183823 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 (72183829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55488 + ... + 56773.

It is an arithmetic number, because the mean of its divisors is an integer number (18074182).

Almost surely, 2^72183823 is an apocalyptic number.

72183823 is a deficient number, since it is larger than the sum of its proper divisors (112905).

72183823 is a wasteful number, since it uses less digits than its factorization.

72183823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112904.

The product of its digits is 16128, while the sum is 34.

The square root of 72183823 is about 8496.1063434964. The cubic root of 72183823 is about 416.3705074830.

The spelling of 72183823 in words is "seventy-two million, one hundred eighty-three thousand, eight hundred twenty-three".