22154668 has 6 divisors (see below), whose sum is σ = 38770676. Its totient is φ = 11077332.

The previous prime is 22154659. The next prime is 22154669. The reversal of 22154668 is 86645122.

It is not an unprimeable number, because it can be changed into a prime (22154669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769330 + ... + 2769337.

Almost surely, 2^22154668 is an apocalyptic number.

It is an amenable number.

22154668 is a deficient number, since it is larger than the sum of its proper divisors (16616008).

22154668 is a wasteful number, since it uses less digits than its factorization.

22154668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538671 (or 5538669 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 22154668 is about 4706.8745468729. The cubic root of 22154668 is about 280.8590454102.

It can be divided in two parts, 22154 and 668, that added together give a palindrome (22822).

The spelling of 22154668 in words is "twenty-two million, one hundred fifty-four thousand, six hundred sixty-eight".