21876948 has 36 divisors (see below), whose sum is σ = 57086848. Its totient is φ = 7056720.

The previous prime is 21876947. The next prime is 21876973. The reversal of 21876948 is 84967812.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21876941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8686 + ... + 10917.

Almost surely, 2^21876948 is an apocalyptic number.

It is an amenable number.

21876948 is an abundant number, since it is smaller than the sum of its proper divisors (35209900).

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

21876948 is a wasteful number, since it uses less digits than its factorization.

21876948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19644 (or 19639 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 21876948 is about 4677.2799787911. The cubic root of 21876948 is about 279.6805370113.

The spelling of 21876948 in words is "twenty-one million, eight hundred seventy-six thousand, nine hundred forty-eight".