22180470 has 32 divisors (see below), whose sum is σ = 57328992. Its totient is φ = 5459712.

The previous prime is 22180463. The next prime is 22180481. The reversal of 22180470 is 7408122.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22180470.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28047 + ... + 28826.

It is an arithmetic number, because the mean of its divisors is an integer number (1791531).

Almost surely, 2^22180470 is an apocalyptic number.

22180470 is an abundant number, since it is smaller than the sum of its proper divisors (35148522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22180470 is a wasteful number, since it uses less digits than its factorization.

22180470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56896.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22180470 is about 4709.6146339165. The cubic root of 22180470 is about 280.9680354382.

Adding to 22180470 its reverse (7408122), we get a palindrome (29588592).

The spelling of 22180470 in words is "twenty-two million, one hundred eighty thousand, four hundred seventy".