21484876 has 12 divisors (see below), whose sum is σ = 42969808. Its totient is φ = 9207792.

The previous prime is 21484843. The next prime is 21484913. The reversal of 21484876 is 67848412.

21484876 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 383631 + ... + 383686.

Almost surely, 2^21484876 is an apocalyptic number.

It is an amenable number.

21484876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21484876 is a wasteful number, since it uses less digits than its factorization.

21484876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767328 (or 767326 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 21484876 is about 4635.1780979807. The cubic root of 21484876 is about 277.9996722043. Note that the first 3 decimals are identical.

The spelling of 21484876 in words is "twenty-one million, four hundred eighty-four thousand, eight hundred seventy-six".