22272467 has 4 divisors (see below), whose sum is σ = 25454256. Its totient is φ = 19090680.

The previous prime is 22272457. The next prime is 22272473. The reversal of 22272467 is 76427222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76427222 = 2 ⋅38213611.

It is not a de Polignac number, because 22272467 - 2⁴ = 22272451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22272457) 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, 1590884 + ... + 1590897.

It is an arithmetic number, because the mean of its divisors is an integer number (6363564).

Almost surely, 2^22272467 is an apocalyptic number.

22272467 is a deficient number, since it is larger than the sum of its proper divisors (3181789).

22272467 is an equidigital number, since it uses as much as digits as its factorization.

22272467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181788.

The product of its digits is 18816, while the sum is 32.

The square root of 22272467 is about 4719.3714623878. The cubic root of 22272467 is about 281.3559527059.

Adding to 22272467 its reverse (76427222), we get a palindrome (98699689).

The spelling of 22272467 in words is "twenty-two million, two hundred seventy-two thousand, four hundred sixty-seven".