20886722 has 8 divisors (see below), whose sum is σ = 32176956. Its totient is φ = 10161072.

The previous prime is 20886713. The next prime is 20886739. The reversal of 20886722 is 22768802.

It can be written as a sum of positive squares in 2 ways, for example, as 19722481 + 1164241 = 4441^2 + 1079^2 .

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, 141053 + ... + 141200.

Almost surely, 2^20886722 is an apocalyptic number.

20886722 is a deficient number, since it is larger than the sum of its proper divisors (11290234).

20886722 is a wasteful number, since it uses less digits than its factorization.

20886722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282292.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 20886722 is about 4570.1993391974. The cubic root of 20886722 is about 275.3954509024.

The spelling of 20886722 in words is "twenty million, eight hundred eighty-six thousand, seven hundred twenty-two".