22072493 has 4 divisors (see below), whose sum is σ = 22081920. Its totient is φ = 22063068.

The previous prime is 22072487. The next prime is 22072517. The reversal of 22072493 is 39427022.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 39427022 = 2 ⋅19713511.

It is a cyclic number.

It is not a de Polignac number, because 22072493 - 2⁶ = 22072429 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 (22072793) 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, 1796 + ... + 6882.

It is an arithmetic number, because the mean of its divisors is an integer number (5520480).

Almost surely, 2^22072493 is an apocalyptic number.

It is an amenable number.

22072493 is a deficient number, since it is larger than the sum of its proper divisors (9427).

22072493 is an equidigital number, since it uses as much as digits as its factorization.

22072493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9426.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 22072493 is about 4698.1371840337. The cubic root of 22072493 is about 280.5113656913.

The spelling of 22072493 in words is "twenty-two million, seventy-two thousand, four hundred ninety-three".