21852832 has 12 divisors (see below), whose sum is σ = 43022826. Its totient is φ = 10926400.

The previous prime is 21852827. The next prime is 21852851. The reversal of 21852832 is 23825812.

It can be written as a sum of positive squares in only one way, i.e., 11587216 + 10265616 = 3404^2 + 3204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21852794 and 21852803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341419 + ... + 341482.

Almost surely, 2^21852832 is an apocalyptic number.

It is an amenable number.

21852832 is a deficient number, since it is larger than the sum of its proper divisors (21169994).

21852832 is an equidigital number, since it uses as much as digits as its factorization.

21852832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682911 (or 682903 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 21852832 is about 4674.7012738784. The cubic root of 21852832 is about 279.5777308412.

The spelling of 21852832 in words is "twenty-one million, eight hundred fifty-two thousand, eight hundred thirty-two".