22180949 has 8 divisors (see below), whose sum is σ = 25378368. Its totient is φ = 18990720.

The previous prime is 22180943. The next prime is 22180973. The reversal of 22180949 is 94908122.

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

It is not a de Polignac number, because 22180949 - 2¹⁶ = 22115413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22180943) 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, 9989 + ... + 12005.

It is an arithmetic number, because the mean of its divisors is an integer number (3172296).

Almost surely, 2^22180949 is an apocalyptic number.

It is an amenable number.

22180949 is a deficient number, since it is larger than the sum of its proper divisors (3197419).

22180949 is a wasteful number, since it uses less digits than its factorization.

22180949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 22180949 is about 4709.6654870596. The cubic root of 22180949 is about 280.9700579791.

The spelling of 22180949 in words is "twenty-two million, one hundred eighty thousand, nine hundred forty-nine".