72469321 has 4 divisors (see below), whose sum is σ = 72562192. Its totient is φ = 72376452.

The previous prime is 72469303. The next prime is 72469333. The reversal of 72469321 is 12396427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72469321 - 2¹⁷ = 72338249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72469361) 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, 45255 + ... + 46828.

It is an arithmetic number, because the mean of its divisors is an integer number (18140548).

Almost surely, 2^72469321 is an apocalyptic number.

It is an amenable number.

72469321 is a deficient number, since it is larger than the sum of its proper divisors (92871).

72469321 is an equidigital number, since it uses as much as digits as its factorization.

72469321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92870.

The product of its digits is 18144, while the sum is 34.

The square root of 72469321 is about 8512.8914594279. The cubic root of 72469321 is about 416.9187215910.

The spelling of 72469321 in words is "seventy-two million, four hundred sixty-nine thousand, three hundred twenty-one".