22406623 has 8 divisors (see below), whose sum is σ = 23952096. Its totient is φ = 20908800.

The previous prime is 22406543. The next prime is 22406627. The reversal of 22406623 is 32660422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22406623 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 (22406627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10938 + ... + 12823.

It is an arithmetic number, because the mean of its divisors is an integer number (2994012).

Almost surely, 2^22406623 is an apocalyptic number.

22406623 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22406623 is a deficient number, since it is larger than the sum of its proper divisors (1545473).

22406623 is a wasteful number, since it uses less digits than its factorization.

22406623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23825.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 22406623 is about 4733.5634568473. The cubic root of 22406623 is about 281.9197288422.

The spelling of 22406623 in words is "twenty-two million, four hundred six thousand, six hundred twenty-three".