22572073 has 4 divisors (see below), whose sum is σ = 23899860. Its totient is φ = 21244288.

The previous prime is 22572041. The next prime is 22572113. The reversal of 22572073 is 37027522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15618304 + 6953769 = 3952^2 + 2637^2 .

It is not a de Polignac number, because 22572073 - 2⁵ = 22572041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22572973) 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, 663868 + ... + 663901.

It is an arithmetic number, because the mean of its divisors is an integer number (5974965).

Almost surely, 2^22572073 is an apocalyptic number.

It is an amenable number.

22572073 is a deficient number, since it is larger than the sum of its proper divisors (1327787).

22572073 is a wasteful number, since it uses less digits than its factorization.

22572073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327786.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 22572073 is about 4751.0075773461. The cubic root of 22572073 is about 282.6119242204.

Adding to 22572073 its reverse (37027522), we get a palindrome (59599595).

The spelling of 22572073 in words is "twenty-two million, five hundred seventy-two thousand, seventy-three".