22004147 has 16 divisors (see below), whose sum is σ = 25497600. Its totient is φ = 18779040.

The previous prime is 22004119. The next prime is 22004149. The reversal of 22004147 is 74140022.

It is a cyclic number.

It is not a de Polignac number, because 22004147 - 2¹⁸ = 21742003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22004149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26129 + ... + 26957.

It is an arithmetic number, because the mean of its divisors is an integer number (1593600).

Almost surely, 2^22004147 is an apocalyptic number.

22004147 is a deficient number, since it is larger than the sum of its proper divisors (3493453).

22004147 is a wasteful number, since it uses less digits than its factorization.

22004147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22004147 is about 4690.8578106781. The cubic root of 22004147 is about 280.2215381065.

Adding to 22004147 its reverse (74140022), we get a palindrome (96144169).

The spelling of 22004147 in words is "twenty-two million, four thousand, one hundred forty-seven".