20101466 has 48 divisors (see below), whose sum is σ = 39644640. Its totient is φ = 7549920.

The previous prime is 20101427. The next prime is 20101483. The reversal of 20101466 is 66410102.

It is a happy 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 23 ways as a sum of consecutive naturals, for example, 30941 + ... + 31583.

It is an arithmetic number, because the mean of its divisors is an integer number (825930).

Almost surely, 2^20101466 is an apocalyptic number.

20101466 is a deficient number, since it is larger than the sum of its proper divisors (19543174).

20101466 is a wasteful number, since it uses less digits than its factorization.

20101466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20101466 is about 4483.4658468645. The cubic root of 20101466 is about 271.9000227288.

Adding to 20101466 its reverse (66410102), we get a palindrome (86511568).

The spelling of 20101466 in words is "twenty million, one hundred one thousand, four hundred sixty-six".