22406463 has 10 divisors (see below), whose sum is σ = 33471504. Its totient is φ = 14937588.

The previous prime is 22406429. The next prime is 22406467. The reversal of 22406463 is 36460422.

It is a de Polignac number, because none of the positive numbers 2^k-22406463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22406467) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 138231 + ... + 138392.

Almost surely, 2^22406463 is an apocalyptic number.

22406463 is a deficient number, since it is larger than the sum of its proper divisors (11065041).

22406463 is an equidigital number, since it uses as much as digits as its factorization.

22406463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276635 (or 276626 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 22406463 is about 4733.5465562303. The cubic root of 22406463 is about 281.9190578016.

Adding to 22406463 its reverse (36460422), we get a palindrome (58866885).

The spelling of 22406463 in words is "twenty-two million, four hundred six thousand, four hundred sixty-three".