21083248 has 10 divisors (see below), whose sum is σ = 40848824. Its totient is φ = 10541616.

The previous prime is 21083239. The next prime is 21083263. The reversal of 21083248 is 84238012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658836 + ... + 658867.

Almost surely, 2^21083248 is an apocalyptic number.

It is an amenable number.

21083248 is a deficient number, since it is larger than the sum of its proper divisors (19765576).

21083248 is a wasteful number, since it uses less digits than its factorization.

21083248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317711 (or 1317705 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 21083248 is about 4591.6498124313. The cubic root of 21083248 is about 276.2565003282.

It can be divided in two parts, 2108 and 3248, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 21083248 in words is "twenty-one million, eighty-three thousand, two hundred forty-eight".