21973848 has 32 divisors (see below), whose sum is σ = 59161200. Its totient is φ = 6761088.

The previous prime is 21973829. The next prime is 21973849. The reversal of 21973848 is 84837912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21973849) by changing a digit.

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, 34903 + ... + 35526.

Almost surely, 2^21973848 is an apocalyptic number.

It is an amenable number.

21973848 is an abundant number, since it is smaller than the sum of its proper divisors (37187352).

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

21973848 is a wasteful number, since it uses less digits than its factorization.

21973848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70451 (or 70447 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 21973848 is about 4687.6271182764. The cubic root of 21973848 is about 280.0928603565.

The spelling of 21973848 in words is "twenty-one million, nine hundred seventy-three thousand, eight hundred forty-eight".