22240727 has 4 divisors (see below), whose sum is σ = 22275960. Its totient is φ = 22205496.

The previous prime is 22240721. The next prime is 22240739. The reversal of 22240727 is 72704222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22240727 - 2⁴ = 22240711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22240696 and 22240705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240721) 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, 16652 + ... + 17937.

It is an arithmetic number, because the mean of its divisors is an integer number (5568990).

Almost surely, 2^22240727 is an apocalyptic number.

22240727 is a deficient number, since it is larger than the sum of its proper divisors (35233).

22240727 is an equidigital number, since it uses as much as digits as its factorization.

22240727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35232.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 22240727 is about 4716.0075275597. The cubic root of 22240727 is about 281.2222377864. Note that the first 4 decimals are identical.

Adding to 22240727 its reverse (72704222), we get a palindrome (94944949).

The spelling of 22240727 in words is "twenty-two million, two hundred forty thousand, seven hundred twenty-seven".