22180870 has 16 divisors (see below), whose sum is σ = 40089168. Its totient is φ = 8836000.

The previous prime is 22180859. The next prime is 22180889. The reversal of 22180870 is 7808122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (2505573).

Almost surely, 2^22180870 is an apocalyptic number.

22180870 is a deficient number, since it is larger than the sum of its proper divisors (17908298).

22180870 is a wasteful number, since it uses less digits than its factorization.

22180870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 22180870 is about 4709.6571000445. The cubic root of 22180870 is about 280.9697244096.

Adding to 22180870 its reverse (7808122), we get a palindrome (29988992).

The spelling of 22180870 in words is "twenty-two million, one hundred eighty thousand, eight hundred seventy".