21848132 has 6 divisors (see below), whose sum is σ = 38234238. Its totient is φ = 10924064.

The previous prime is 21848129. The next prime is 21848143. The reversal of 21848132 is 23184812.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 8202496 = 3694^2 + 2864^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21848095 and 21848104.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2731013 + ... + 2731020.

It is an arithmetic number, because the mean of its divisors is an integer number (6372373).

Almost surely, 2^21848132 is an apocalyptic number.

It is an amenable number.

21848132 is a deficient number, since it is larger than the sum of its proper divisors (16386106).

21848132 is a wasteful number, since it uses less digits than its factorization.

21848132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462037 (or 5462035 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 21848132 is about 4674.1985409266. The cubic root of 21848132 is about 279.5576860014.

The spelling of 21848132 in words is "twenty-one million, eight hundred forty-eight thousand, one hundred thirty-two".