21833148 has 24 divisors (see below), whose sum is σ = 51471952. Its totient is φ = 7202304.

The previous prime is 21833129. The next prime is 21833173. The reversal of 21833148 is 84133812.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 8215 + ... + 10542.

Almost surely, 2^21833148 is an apocalyptic number.

It is an amenable number.

21833148 is an abundant number, since it is smaller than the sum of its proper divisors (29638804).

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

21833148 is a wasteful number, since it uses less digits than its factorization.

21833148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18861 (or 18859 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 21833148 is about 4672.5954243868. The cubic root of 21833148 is about 279.4937621482.

The spelling of 21833148 in words is "twenty-one million, eight hundred thirty-three thousand, one hundred forty-eight".