21882336 has 48 divisors (see below), whose sum is σ = 65649024. Its totient is φ = 6251904.

The previous prime is 21882331. The next prime is 21882359. The reversal of 21882336 is 63328812.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21882297 and 21882306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21882331) by changing a digit.

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, 15610 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (1367688).

Almost surely, 2^21882336 is an apocalyptic number.

It is an amenable number.

21882336 is an abundant number, since it is smaller than the sum of its proper divisors (43766688).

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

21882336 is a wasteful number, since it uses less digits than its factorization.

21882336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32583 (or 32575 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 21882336 is about 4677.8559191151. The cubic root of 21882336 is about 279.7034956531.

The spelling of 21882336 in words is "twenty-one million, eight hundred eighty-two thousand, three hundred thirty-six".