72394811 has 4 divisors (see below), whose sum is σ = 72412800. Its totient is φ = 72376824.

The previous prime is 72394801. The next prime is 72394813. The reversal of 72394811 is 11849327.

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 72394811 - 2⁶ = 72394747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72394813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125 + ... + 12033.

It is an arithmetic number, because the mean of its divisors is an integer number (18103200).

Almost surely, 2^72394811 is an apocalyptic number.

72394811 is a deficient number, since it is larger than the sum of its proper divisors (17989).

72394811 is a wasteful number, since it uses less digits than its factorization.

72394811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17988.

The product of its digits is 12096, while the sum is 35.

The square root of 72394811 is about 8508.5140300760. The cubic root of 72394811 is about 416.7757863182.

The spelling of 72394811 in words is "seventy-two million, three hundred ninety-four thousand, eight hundred eleven".