21033048 has 32 divisors (see below), whose sum is σ = 53109360. Its totient is φ = 6940800.

The previous prime is 21033011. The next prime is 21033053. The reversal of 21033048 is 84033012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1915 + ... + 6762.

Almost surely, 2^21033048 is an apocalyptic number.

It is an amenable number.

21033048 is an abundant number, since it is smaller than the sum of its proper divisors (32076312).

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

21033048 is a wasteful number, since it uses less digits than its factorization.

21033048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8787 (or 8783 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 21033048 is about 4586.1801098518. The cubic root of 21033048 is about 276.0370670653.

It can be divided in two parts, 2103 and 3048, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 21033048 in words is "twenty-one million, thirty-three thousand, forty-eight".