22472145 has 24 divisors (see below), whose sum is σ = 39064896. Its totient is φ = 11950368.

The previous prime is 22472111. The next prime is 22472161. The reversal of 22472145 is 54127422.

It is not a de Polignac number, because 22472145 - 2⁹ = 22471633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24892 + ... + 25778.

It is an arithmetic number, because the mean of its divisors is an integer number (1627704).

Almost surely, 2^22472145 is an apocalyptic number.

It is an amenable number.

22472145 is a deficient number, since it is larger than the sum of its proper divisors (16592751).

22472145 is a wasteful number, since it uses less digits than its factorization.

22472145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1458 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 22472145 is about 4740.4794061361. The cubic root of 22472145 is about 282.1942602951.

Adding to 22472145 its reverse (54127422), we get a palindrome (76599567).

The spelling of 22472145 in words is "twenty-two million, four hundred seventy-two thousand, one hundred forty-five".