21034932 has 24 divisors (see below), whose sum is σ = 49459872. Its totient is φ = 6957600.

The previous prime is 21034891. The next prime is 21034943. The reversal of 21034932 is 23943012.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 5119 + ... + 8262.

It is an arithmetic number, because the mean of its divisors is an integer number (2060828).

Almost surely, 2^21034932 is an apocalyptic number.

It is an amenable number.

21034932 is an abundant number, since it is smaller than the sum of its proper divisors (28424940).

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

21034932 is a wasteful number, since it uses less digits than its factorization.

21034932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13519 (or 13517 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 21034932 is about 4586.3855049483. The cubic root of 21034932 is about 276.0453086717.

Adding to 21034932 its reverse (23943012), we get a palindrome (44977944).

The spelling of 21034932 in words is "twenty-one million, thirty-four thousand, nine hundred thirty-two".