22221654 has 32 divisors (see below), whose sum is σ = 54700800. Its totient is φ = 5860512.

The previous prime is 22221649. The next prime is 22221691. The reversal of 22221654 is 45612222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19804 + ... + 20895.

It is an arithmetic number, because the mean of its divisors is an integer number (1709400).

Almost surely, 2^22221654 is an apocalyptic number.

22221654 is an abundant number, since it is smaller than the sum of its proper divisors (32479146).

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

22221654 is a wasteful number, since it uses less digits than its factorization.

22221654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40724.

The product of its digits is 1920, while the sum is 24.

The square root of 22221654 is about 4713.9849384571. The cubic root of 22221654 is about 281.1418254609.

Adding to 22221654 its reverse (45612222), we get a palindrome (67833876).

The spelling of 22221654 in words is "twenty-two million, two hundred twenty-one thousand, six hundred fifty-four".