72162023 has 4 divisors (see below), whose sum is σ = 72195288. Its totient is φ = 72128760.

The previous prime is 72162011. The next prime is 72162029. The reversal of 72162023 is 32026127.

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 72162023 - 2⁶ = 72161959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72162023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72162029) 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, 13133 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (18048822).

Almost surely, 2^72162023 is an apocalyptic number.

72162023 is a deficient number, since it is larger than the sum of its proper divisors (33265).

72162023 is a wasteful number, since it uses less digits than its factorization.

72162023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33264.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 72162023 is about 8494.8233059905. The cubic root of 72162023 is about 416.3285876982.

The spelling of 72162023 in words is "seventy-two million, one hundred sixty-two thousand, twenty-three".