72397853 has 16 divisors (see below), whose sum is σ = 81259200. Its totient is φ = 63934080.

The previous prime is 72397811. The next prime is 72397861. The reversal of 72397853 is 35879327.

It is a cyclic number.

It is not a de Polignac number, because 72397853 - 2⁸ = 72397597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72397873) 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 15 ways as a sum of consecutive naturals, for example, 126953 + ... + 127521.

It is an arithmetic number, because the mean of its divisors is an integer number (5078700).

Almost surely, 2^72397853 is an apocalyptic number.

It is an amenable number.

72397853 is a deficient number, since it is larger than the sum of its proper divisors (8861347).

72397853 is a wasteful number, since it uses less digits than its factorization.

72397853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 317520, while the sum is 44.

The square root of 72397853 is about 8508.6927903174. The cubic root of 72397853 is about 416.7816238185.

The spelling of 72397853 in words is "seventy-two million, three hundred ninety-seven thousand, eight hundred fifty-three".