22528073 has 4 divisors (see below), whose sum is σ = 22548240. Its totient is φ = 22507908.

The previous prime is 22528069. The next prime is 22528117. The reversal of 22528073 is 37082522.

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 22528073 - 2² = 22528069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22528573) 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, 8303 + ... + 10676.

It is an arithmetic number, because the mean of its divisors is an integer number (5637060).

Almost surely, 2^22528073 is an apocalyptic number.

It is an amenable number.

22528073 is a deficient number, since it is larger than the sum of its proper divisors (20167).

22528073 is a wasteful number, since it uses less digits than its factorization.

22528073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20166.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 22528073 is about 4746.3747218272. The cubic root of 22528073 is about 282.4281718866.

The spelling of 22528073 in words is "twenty-two million, five hundred twenty-eight thousand, seventy-three".