22421403 has 12 divisors (see below), whose sum is σ = 32478160. Its totient is φ = 14905296.

The previous prime is 22421393. The next prime is 22421411. The reversal of 22421403 is 30412422.

It is not a de Polignac number, because 22421403 - 2¹⁰ = 22420379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22421423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18 + ... + 6696.

Almost surely, 2^22421403 is an apocalyptic number.

22421403 is a deficient number, since it is larger than the sum of its proper divisors (10056757).

22421403 is a wasteful number, since it uses less digits than its factorization.

22421403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7058 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22421403 is about 4735.1243911855. The cubic root of 22421403 is about 281.9817024494.

Adding to 22421403 its reverse (30412422), we get a palindrome (52833825).

The spelling of 22421403 in words is "twenty-two million, four hundred twenty-one thousand, four hundred three".