22840001 has 2 divisors, whose sum is σ = 22840002. Its totient is φ = 22840000.

The previous prime is 22839997. The next prime is 22840007. The reversal of 22840001 is 10004822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18105025 + 4734976 = 4255^2 + 2176^2 .

It is a cyclic number.

It is not a de Polignac number, because 22840001 - 2² = 22839997 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22840007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11420000 + 11420001.

It is an arithmetic number, because the mean of its divisors is an integer number (11420001).

Almost surely, 2^22840001 is an apocalyptic number.

It is an amenable number.

22840001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22840001 is an equidigital number, since it uses as much as digits as its factorization.

22840001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 22840001 is about 4779.1213627612. The cubic root of 22840001 is about 283.7257196196.

Adding to 22840001 its reverse (10004822), we get a palindrome (32844823).

The spelling of 22840001 in words is "twenty-two million, eight hundred forty thousand, one".