22005902 has 8 divisors (see below), whose sum is σ = 33193800. Its totient is φ = 10941304.

The previous prime is 22005859. The next prime is 22005911. The reversal of 22005902 is 20950022.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30377 + ... + 31092.

It is an arithmetic number, because the mean of its divisors is an integer number (4149225).

Almost surely, 2^22005902 is an apocalyptic number.

22005902 is a deficient number, since it is larger than the sum of its proper divisors (11187898).

22005902 is a wasteful number, since it uses less digits than its factorization.

22005902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61650.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 22005902 is about 4691.0448729468. The cubic root of 22005902 is about 280.2289878496.

Adding to 22005902 its reverse (20950022), we get a palindrome (42955924).

The spelling of 22005902 in words is "twenty-two million, five thousand, nine hundred two".