21440848 has 40 divisors (see below), whose sum is σ = 48809376. Its totient is φ = 8995200.

The previous prime is 21440843. The next prime is 21440851. The reversal of 21440848 is 84804412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21440843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398 + ... + 6973.

Almost surely, 2^21440848 is an apocalyptic number.

It is an amenable number.

21440848 is an abundant number, since it is smaller than the sum of its proper divisors (27368528).

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

21440848 is a wasteful number, since it uses less digits than its factorization.

21440848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9403 (or 9397 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 21440848 is about 4630.4263302638. The cubic root of 21440848 is about 277.8096448892.

The spelling of 21440848 in words is "twenty-one million, four hundred forty thousand, eight hundred forty-eight".