22400117 has 4 divisors (see below), whose sum is σ = 22779840. Its totient is φ = 22020396.

The previous prime is 22400111. The next prime is 22400149. The reversal of 22400117 is 71100422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22400117 - 2²⁴ = 5622901 is a prime.

It is a super-2 number, since 2×22400117² = 1003530483227378, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22400095 and 22400104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189773 + ... + 189890.

It is an arithmetic number, because the mean of its divisors is an integer number (5694960).

Almost surely, 2^22400117 is an apocalyptic number.

It is an amenable number.

22400117 is a deficient number, since it is larger than the sum of its proper divisors (379723).

22400117 is an equidigital number, since it uses as much as digits as its factorization.

22400117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379722.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22400117 is about 4732.8761868445. The cubic root of 22400117 is about 281.8924400758.

Adding to 22400117 its reverse (71100422), we get a palindrome (93500539).

The spelling of 22400117 in words is "twenty-two million, four hundred thousand, one hundred seventeen".