22149985 has 24 divisors (see below), whose sum is σ = 31411584. Its totient is φ = 14863680.

The previous prime is 22149977. The next prime is 22150001. The reversal of 22149985 is 58994122.

It is not a de Polignac number, because 22149985 - 2³ = 22149977 is a prime.

It is a Duffinian 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, 8104 + ... + 10486.

It is an arithmetic number, because the mean of its divisors is an integer number (1308816).

Almost surely, 2^22149985 is an apocalyptic number.

It is an amenable number.

22149985 is a deficient number, since it is larger than the sum of its proper divisors (9261599).

22149985 is a wasteful number, since it uses less digits than its factorization.

22149985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425 (or 2412 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 22149985 is about 4706.3770567178. The cubic root of 22149985 is about 280.8392549144.

The spelling of 22149985 in words is "twenty-two million, one hundred forty-nine thousand, nine hundred eighty-five".