22146805 has 8 divisors (see below), whose sum is σ = 26620344. Its totient is φ = 17688000.

The previous prime is 22146797. The next prime is 22146809. The reversal of 22146805 is 50864122.

It can be written as a sum of positive squares in 4 ways, for example, as 3845521 + 18301284 = 1961^2 + 4278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22146805 - 2³ = 22146797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22146809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46 + ... + 6655.

It is an arithmetic number, because the mean of its divisors is an integer number (3327543).

Almost surely, 2^22146805 is an apocalyptic number.

It is an amenable number.

22146805 is a deficient number, since it is larger than the sum of its proper divisors (4473539).

22146805 is an equidigital number, since it uses as much as digits as its factorization.

22146805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22146805 is about 4706.0392051066. The cubic root of 22146805 is about 280.8258145506.

The spelling of 22146805 in words is "twenty-two million, one hundred forty-six thousand, eight hundred five".