22200623 has 4 divisors (see below), whose sum is σ = 23506560. Its totient is φ = 20894688.

The previous prime is 22200617. The next prime is 22200641. The reversal of 22200623 is 32600222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32600222 = 2 ⋅16300111.

It is a cyclic number.

It is not a de Polignac number, because 22200623 - 2¹⁰ = 22199599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1305919 = 22200623 / (2 + 2 + 2 + 0 + 0 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200613) 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, 652943 + ... + 652976.

It is an arithmetic number, because the mean of its divisors is an integer number (5876640).

Almost surely, 2^22200623 is an apocalyptic number.

22200623 is a deficient number, since it is larger than the sum of its proper divisors (1305937).

22200623 is a wasteful number, since it uses less digits than its factorization.

22200623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305936.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22200623 is about 4711.7537074851. The cubic root of 22200623 is about 281.0531047922.

Adding to 22200623 its reverse (32600222), we get a palindrome (54800845).

The spelling of 22200623 in words is "twenty-two million, two hundred thousand, six hundred twenty-three".