21848466 has 16 divisors (see below), whose sum is σ = 43992000. Its totient is φ = 7233648.

The previous prime is 21848441. The next prime is 21848473. The reversal of 21848466 is 66484812.

It is an unprimeable number.

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, 11326 + ... + 13113.

It is an arithmetic number, because the mean of its divisors is an integer number (2749500).

Almost surely, 2^21848466 is an apocalyptic number.

21848466 is an abundant number, since it is smaller than the sum of its proper divisors (22143534).

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

21848466 is a wasteful number, since it uses less digits than its factorization.

21848466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24593.

The product of its digits is 73728, while the sum is 39.

The square root of 21848466 is about 4674.2342688402. The cubic root of 21848466 is about 279.5591105594.

It can be divided in two parts, 218 and 48466, that added together give a palindrome (48684).

The spelling of 21848466 in words is "twenty-one million, eight hundred forty-eight thousand, four hundred sixty-six".