22472147 has 4 divisors (see below), whose sum is σ = 23794056. Its totient is φ = 21150240.

The previous prime is 22472111. The next prime is 22472161. The reversal of 22472147 is 74127422.

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 22472147 - 2⁶ = 22472083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22475147) 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, 660929 + ... + 660962.

It is an arithmetic number, because the mean of its divisors is an integer number (5948514).

Almost surely, 2^22472147 is an apocalyptic number.

22472147 is a deficient number, since it is larger than the sum of its proper divisors (1321909).

22472147 is a wasteful number, since it uses less digits than its factorization.

22472147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321908.

The product of its digits is 6272, while the sum is 29.

The square root of 22472147 is about 4740.4796170852. The cubic root of 22472147 is about 282.1942686667.

Adding to 22472147 its reverse (74127422), we get a palindrome (96599569).

The spelling of 22472147 in words is "twenty-two million, four hundred seventy-two thousand, one hundred forty-seven".