21483248 has 20 divisors (see below), whose sum is σ = 42967488. Its totient is φ = 10394880.

The previous prime is 21483239. The next prime is 21483263. The reversal of 21483248 is 84238412.

21483248 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21161 + ... + 22152.

Almost surely, 2^21483248 is an apocalyptic number.

It is an amenable number.

21483248 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.

21483248 is a wasteful number, since it uses less digits than its factorization.

21483248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43352 (or 43346 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The square root of 21483248 is about 4635.0024811212. The cubic root of 21483248 is about 277.9926502896.

The spelling of 21483248 in words is "twenty-one million, four hundred eighty-three thousand, two hundred forty-eight".