22040450 has 12 divisors (see below), whose sum is σ = 40995330. Its totient is φ = 8816160.

The previous prime is 22040443. The next prime is 22040461. The reversal of 22040450 is 5404022.

It can be written as a sum of positive squares in 3 ways, for example, as 19811401 + 2229049 = 4451^2 + 1493^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 220355 + ... + 220454.

Almost surely, 2^22040450 is an apocalyptic number.

22040450 is a deficient number, since it is larger than the sum of its proper divisors (18954880).

22040450 is a wasteful number, since it uses less digits than its factorization.

22040450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440821 (or 440816 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22040450 is about 4694.7257640889. The cubic root of 22040450 is about 280.3755589695.

Adding to 22040450 its reverse (5404022), we get a palindrome (27444472).

The spelling of 22040450 in words is "twenty-two million, forty thousand, four hundred fifty".