21882867 has 16 divisors (see below), whose sum is σ = 30820608. Its totient is φ = 13782560.

The previous prime is 21882841. The next prime is 21882899. The reversal of 21882867 is 76828812.

It is a cyclic number.

It is not a de Polignac number, because 21882867 - 2⁷ = 21882739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21882067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3817 + ... + 7637.

It is an arithmetic number, because the mean of its divisors is an integer number (1926288).

Almost surely, 2^21882867 is an apocalyptic number.

21882867 is a deficient number, since it is larger than the sum of its proper divisors (8937741).

21882867 is a wasteful number, since it uses less digits than its factorization.

21882867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930.

The product of its digits is 86016, while the sum is 42.

The square root of 21882867 is about 4677.9126755424. The cubic root of 21882867 is about 279.7057580769.

The spelling of 21882867 in words is "twenty-one million, eight hundred eighty-two thousand, eight hundred sixty-seven".