22490027 has 4 divisors (see below), whose sum is σ = 25702896. Its totient is φ = 19277160.

The previous prime is 22490003. The next prime is 22490063. The reversal of 22490027 is 72009422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72009422 = 2 ⋅36004711.

It is not a de Polignac number, because 22490027 - 2¹⁰ = 22489003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22489978 and 22490005.

It is not an unprimeable number, because it can be changed into a prime (22490077) 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, 1606424 + ... + 1606437.

It is an arithmetic number, because the mean of its divisors is an integer number (6425724).

Almost surely, 2^22490027 is an apocalyptic number.

22490027 is a deficient number, since it is larger than the sum of its proper divisors (3212869).

22490027 is an equidigital number, since it uses as much as digits as its factorization.

22490027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3212868.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22490027 is about 4742.3651272335. The cubic root of 22490027 is about 282.2690916009.

Adding to 22490027 its reverse (72009422), we get a palindrome (94499449).

The spelling of 22490027 in words is "twenty-two million, four hundred ninety thousand, twenty-seven".