21282162 has 32 divisors (see below), whose sum is σ = 47520000. Its totient is φ = 6298320.

The previous prime is 21282139. The next prime is 21282167. The reversal of 21282162 is 26128212.

It is not an unprimeable number, because it can be changed into a prime (21282167) 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 15 ways as a sum of consecutive naturals, for example, 912 + ... + 6587.

It is an arithmetic number, because the mean of its divisors is an integer number (1485000).

Almost surely, 2^21282162 is an apocalyptic number.

21282162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21282162 is an abundant number, since it is smaller than the sum of its proper divisors (26237838).

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

21282162 is a wasteful number, since it uses less digits than its factorization.

21282162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7558.

The product of its digits is 768, while the sum is 24.

The square root of 21282162 is about 4613.2593683859. The cubic root of 21282162 is about 277.1225808213.

The spelling of 21282162 in words is "twenty-one million, two hundred eighty-two thousand, one hundred sixty-two".