20323966 has 16 divisors (see below), whose sum is σ = 33390000. Its totient is φ = 9220608.

The previous prime is 20323957. The next prime is 20323969. The reversal of 20323966 is 66932302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5091 + ... + 8158.

It is an arithmetic number, because the mean of its divisors is an integer number (2086875).

Almost surely, 2^20323966 is an apocalyptic number.

20323966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20323966 is a deficient number, since it is larger than the sum of its proper divisors (13066034).

20323966 is a wasteful number, since it uses less digits than its factorization.

20323966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13323.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 20323966 is about 4508.2109533605. The cubic root of 20323966 is about 272.8995502296.

The spelling of 20323966 in words is "twenty million, three hundred twenty-three thousand, nine hundred sixty-six".