21446082 has 24 divisors (see below), whose sum is σ = 53104896. Its totient is φ = 6127416.

The previous prime is 21446081. The next prime is 21446083. The reversal of 21446082 is 28064412.

It is an interprime number because it is at equal distance from previous prime (21446081) and next prime (21446083).

It is not an unprimeable number, because it can be changed into a prime (21446081) 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 11 ways as a sum of consecutive naturals, for example, 84978 + ... + 85229.

It is an arithmetic number, because the mean of its divisors is an integer number (2212704).

Almost surely, 2^21446082 is an apocalyptic number.

21446082 is an abundant number, since it is smaller than the sum of its proper divisors (31658814).

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

21446082 is a wasteful number, since it uses less digits than its factorization.

21446082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170222 (or 170219 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 21446082 is about 4630.9914705169. The cubic root of 21446082 is about 277.8322487430.

The spelling of 21446082 in words is "twenty-one million, four hundred forty-six thousand, eighty-two".