20466872 has 32 divisors (see below), whose sum is σ = 41035680. Its totient is φ = 9546240.

The previous prime is 20466863. The next prime is 20466877. The reversal of 20466872 is 27866402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466877) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6188 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (1282365).

Almost surely, 2^20466872 is an apocalyptic number.

It is an amenable number.

20466872 is an abundant number, since it is smaller than the sum of its proper divisors (20568808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20466872 is a wasteful number, since it uses less digits than its factorization.

20466872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783 (or 2779 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 20466872 is about 4524.0327142937. The cubic root of 20466872 is about 273.5376791699.

It can be divided in two parts, 204 and 66872, that added together give a palindrome (67076).

The spelling of 20466872 in words is "twenty million, four hundred sixty-six thousand, eight hundred seventy-two".