22040224 has 12 divisors (see below), whose sum is σ = 43391754. Its totient is φ = 11020096.

The previous prime is 22040219. The next prime is 22040231. The reversal of 22040224 is 42204022.

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 250000 = 4668^2 + 500^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 22040198 and 22040207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344347 + ... + 344410.

Almost surely, 2^22040224 is an apocalyptic number.

It is an amenable number.

22040224 is a deficient number, since it is larger than the sum of its proper divisors (21351530).

22040224 is an equidigital number, since it uses as much as digits as its factorization.

22040224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688767 (or 688759 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22040224 is about 4694.7016944637. The cubic root of 22040224 is about 280.3746006543.

Adding to 22040224 its reverse (42204022), we get a palindrome (64244246).

The spelling of 22040224 in words is "twenty-two million, forty thousand, two hundred twenty-four".