22018870 has 16 divisors (see below), whose sum is σ = 39693888. Its totient is φ = 8794240.

The previous prime is 22018849. The next prime is 22018877. The reversal of 22018870 is 7881022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7902 + ... + 10318.

It is an arithmetic number, because the mean of its divisors is an integer number (2480868).

Almost surely, 2^22018870 is an apocalyptic number.

22018870 is a deficient number, since it is larger than the sum of its proper divisors (17675018).

22018870 is a wasteful number, since it uses less digits than its factorization.

22018870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

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

The square root of 22018870 is about 4692.4268774271. The cubic root of 22018870 is about 280.2840230232.

Adding to 22018870 its reverse (7881022), we get a palindrome (29899892).

The spelling of 22018870 in words is "twenty-two million, eighteen thousand, eight hundred seventy".