21837082 has 16 divisors (see below), whose sum is σ = 33926400. Its totient is φ = 10530720.

The previous prime is 21837073. The next prime is 21837089. The reversal of 21837082 is 28073812.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (21837089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34969 + ... + 35587.

It is an arithmetic number, because the mean of its divisors is an integer number (2120400).

Almost surely, 2^21837082 is an apocalyptic number.

21837082 is a deficient number, since it is larger than the sum of its proper divisors (12089318).

21837082 is a wasteful number, since it uses less digits than its factorization.

21837082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 21837082 is about 4673.0163706112. The cubic root of 21837082 is about 279.5105479766.

The spelling of 21837082 in words is "twenty-one million, eight hundred thirty-seven thousand, eighty-two".