72412823 has 4 divisors (see below), whose sum is σ = 82757520. Its totient is φ = 62068128.

The previous prime is 72412801. The next prime is 72412831. The reversal of 72412823 is 32821427.

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 72412823 - 2⁸ = 72412567 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 (72412523) 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, 5172338 + ... + 5172351.

It is an arithmetic number, because the mean of its divisors is an integer number (20689380).

Almost surely, 2^72412823 is an apocalyptic number.

72412823 is a deficient number, since it is larger than the sum of its proper divisors (10344697).

72412823 is a wasteful number, since it uses less digits than its factorization.

72412823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344696.

The product of its digits is 5376, while the sum is 29.

The square root of 72412823 is about 8509.5724334422. The cubic root of 72412823 is about 416.8103483854.

The spelling of 72412823 in words is "seventy-two million, four hundred twelve thousand, eight hundred twenty-three".