22180249 has 16 divisors (see below), whose sum is σ = 27446272. Its totient is φ = 17454528.

The previous prime is 22180237. The next prime is 22180309. The reversal of 22180249 is 94208122.

22180249 = 448² + 449² + ... + 538².

It is not a de Polignac number, because 22180249 - 2⁹ = 22179737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22180219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19747 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (1715392).

Almost surely, 2^22180249 is an apocalyptic number.

It is an amenable number.

22180249 is a deficient number, since it is larger than the sum of its proper divisors (5266023).

22180249 is a wasteful number, since it uses less digits than its factorization.

22180249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22180249 is about 4709.5911712165. The cubic root of 22180249 is about 280.9671022728.

The spelling of 22180249 in words is "twenty-two million, one hundred eighty thousand, two hundred forty-nine".