22247445 has 32 divisors (see below), whose sum is σ = 39219840. Its totient is φ = 10679040.

The previous prime is 22247431. The next prime is 22247453. The reversal of 22247445 is 54474222.

It is not a de Polignac number, because 22247445 - 2⁷ = 22247317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17367 + ... + 18603.

It is an arithmetic number, because the mean of its divisors is an integer number (1225620).

Almost surely, 2^22247445 is an apocalyptic number.

It is an amenable number.

22247445 is a deficient number, since it is larger than the sum of its proper divisors (16972395).

22247445 is a wasteful number, since it uses less digits than its factorization.

22247445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365.

The product of its digits is 17920, while the sum is 30.

The square root of 22247445 is about 4716.7197287946. The cubic root of 22247445 is about 281.2505501224.

It can be divided in two parts, 2224 and 7445, that added together give a palindrome (9669).

The spelling of 22247445 in words is "twenty-two million, two hundred forty-seven thousand, four hundred forty-five".