21234932 has 12 divisors (see below), whose sum is σ = 39117120. Its totient is φ = 10058616.

The previous prime is 21234923. The next prime is 21234937. The reversal of 21234932 is 23943212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139628 + ... + 139779.

It is an arithmetic number, because the mean of its divisors is an integer number (3259760).

Almost surely, 2^21234932 is an apocalyptic number.

It is an amenable number.

21234932 is a deficient number, since it is larger than the sum of its proper divisors (17882188).

21234932 is a wasteful number, since it uses less digits than its factorization.

21234932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279430 (or 279428 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 21234932 is about 4608.1375847516. The cubic root of 21234932 is about 276.9174294591.

The spelling of 21234932 in words is "twenty-one million, two hundred thirty-four thousand, nine hundred thirty-two".