22040817 has 16 divisors (see below), whose sum is σ = 31364160. Its totient is φ = 13727232.

The previous prime is 22040803. The next prime is 22040833. The reversal of 22040817 is 71804022.

It is not a de Polignac number, because 22040817 - 2⁴ = 22040801 is a prime.

It is a super-2 number, since 2×22040817² = 971595228054978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22044817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (1960260).

Almost surely, 2^22040817 is an apocalyptic number.

It is an amenable number.

22040817 is a deficient number, since it is larger than the sum of its proper divisors (9323343).

22040817 is a wasteful number, since it uses less digits than its factorization.

22040817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22040817 is about 4694.7648503413. The cubic root of 22040817 is about 280.3771151576.

Adding to 22040817 its reverse (71804022), we get a palindrome (93844839).

The spelling of 22040817 in words is "twenty-two million, forty thousand, eight hundred seventeen".