22287405 has 24 divisors (see below), whose sum is σ = 41483232. Its totient is φ = 10188192.

The previous prime is 22287389. The next prime is 22287413. The reversal of 22287405 is 50478222.

It is not a de Polignac number, because 22287405 - 2⁴ = 22287389 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 23 ways as a sum of consecutive naturals, for example, 14427 + ... + 15896.

It is an arithmetic number, because the mean of its divisors is an integer number (1728468).

Almost surely, 2^22287405 is an apocalyptic number.

It is an amenable number.

22287405 is a deficient number, since it is larger than the sum of its proper divisors (19195827).

22287405 is a wasteful number, since it uses less digits than its factorization.

22287405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30345 (or 30338 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 22287405 is about 4720.9538231167. The cubic root of 22287405 is about 281.4188398564.

The spelling of 22287405 in words is "twenty-two million, two hundred eighty-seven thousand, four hundred five".