22000073 has 4 divisors (see below), whose sum is σ = 22009620. Its totient is φ = 21990528.

The previous prime is 22000061. The next prime is 22000087. The reversal of 22000073 is 37000022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 8479744 + 13520329 = 2912^2 + 3677^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000073 - 2¹⁶ = 21934537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000003) 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, 1061 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (5502405).

Almost surely, 2^22000073 is an apocalyptic number.

It is an amenable number.

22000073 is a deficient number, since it is larger than the sum of its proper divisors (9547).

22000073 is an equidigital number, since it uses as much as digits as its factorization.

22000073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 22000073 is about 4690.4235416431. The cubic root of 22000073 is about 280.2042429877.

Adding to 22000073 its reverse (37000022), we get a palindrome (59000095).

The spelling of 22000073 in words is "twenty-two million, seventy-three", and thus it is an aban number and an uban number.