20910922 has 8 divisors (see below), whose sum is σ = 31880772. Its totient is φ = 10284000.

The previous prime is 20910919. The next prime is 20910941. The reversal of 20910922 is 22901902.

It can be written as a sum of positive squares in 2 ways, for example, as 19971961 + 938961 = 4469^2 + 969^2 .

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

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, 85579 + ... + 85822.

Almost surely, 2^20910922 is an apocalyptic number.

20910922 is a deficient number, since it is larger than the sum of its proper divisors (10969850).

20910922 is a wasteful number, since it uses less digits than its factorization.

20910922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171464.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 20910922 is about 4572.8461596691. The cubic root of 20910922 is about 275.5017704044.

The spelling of 20910922 in words is "twenty million, nine hundred ten thousand, nine hundred twenty-two".