22031847 has 12 divisors (see below), whose sum is σ = 33696000. Its totient is φ = 13823808.

The previous prime is 22031831. The next prime is 22031873. The reversal of 22031847 is 74813022.

It is not a de Polignac number, because 22031847 - 2⁴ = 22031831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22031847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71847 + ... + 72152.

It is an arithmetic number, because the mean of its divisors is an integer number (2808000).

Almost surely, 2^22031847 is an apocalyptic number.

22031847 is a deficient number, since it is larger than the sum of its proper divisors (11664153).

22031847 is a wasteful number, since it uses less digits than its factorization.

22031847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144022 (or 144019 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22031847 is about 4693.8094337116. The cubic root of 22031847 is about 280.3390747653.

Adding to 22031847 its reverse (74813022), we get a palindrome (96844869).

The spelling of 22031847 in words is "twenty-two million, thirty-one thousand, eight hundred forty-seven".