22812002 has 4 divisors (see below), whose sum is σ = 34218006. Its totient is φ = 11406000.

The previous prime is 22811993. The next prime is 22812019. The reversal of 22812002 is 20021822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 10569001 = 3499^2 + 3251^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5702999 + ... + 5703002.

Almost surely, 2^22812002 is an apocalyptic number.

22812002 is a deficient number, since it is larger than the sum of its proper divisors (11406004).

22812002 is a wasteful number, since it uses less digits than its factorization.

22812002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11406003.

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

The square root of 22812002 is about 4776.1911603285. The cubic root of 22812002 is about 283.6097347331.

Adding to 22812002 its reverse (20021822), we get a palindrome (42833824).

The spelling of 22812002 in words is "twenty-two million, eight hundred twelve thousand, two".