22406549 has 8 divisors (see below), whose sum is σ = 24673248. Its totient is φ = 20178160.

The previous prime is 22406543. The next prime is 22406627. The reversal of 22406549 is 94560422.

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

It is a cyclic number.

It is not a de Polignac number, because 22406549 - 2¹² = 22402453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22406543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8342 + ... + 10695.

It is an arithmetic number, because the mean of its divisors is an integer number (3084156).

Almost surely, 2^22406549 is an apocalyptic number.

It is an amenable number.

22406549 is a deficient number, since it is larger than the sum of its proper divisors (2266699).

22406549 is a wasteful number, since it uses less digits than its factorization.

22406549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19155.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 22406549 is about 4733.5556403194. Note that the first 3 decimals coincide. The cubic root of 22406549 is about 281.9194184863.

The spelling of 22406549 in words is "twenty-two million, four hundred six thousand, five hundred forty-nine".