22530405 has 16 divisors (see below), whose sum is σ = 36506880. Its totient is φ = 11863488.

The previous prime is 22530379. The next prime is 22530449. The reversal of 22530405 is 50403522.

It is not a de Polignac number, because 22530405 - 2¹⁴ = 22514021 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8322 + ... + 10691.

It is an arithmetic number, because the mean of its divisors is an integer number (2281680).

Almost surely, 2^22530405 is an apocalyptic number.

It is an amenable number.

22530405 is a deficient number, since it is larger than the sum of its proper divisors (13976475).

22530405 is a wasteful number, since it uses less digits than its factorization.

22530405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22530405 is about 4746.6203766469. The cubic root of 22530405 is about 282.4379167617.

Adding to 22530405 its reverse (50403522), we get a palindrome (72933927).

The spelling of 22530405 in words is "twenty-two million, five hundred thirty thousand, four hundred five".