21882041 has 4 divisors (see below), whose sum is σ = 22094592. Its totient is φ = 21669492.

The previous prime is 21882031. The next prime is 21882061. The reversal of 21882041 is 14028812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21882041 - 2¹⁰ = 21881017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21882041.

It is not an unprimeable number, because it can be changed into a prime (21882011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106121 + ... + 106326.

It is an arithmetic number, because the mean of its divisors is an integer number (5523648).

Almost surely, 2^21882041 is an apocalyptic number.

It is an amenable number.

21882041 is a deficient number, since it is larger than the sum of its proper divisors (212551).

21882041 is a wasteful number, since it uses less digits than its factorization.

21882041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212550.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 21882041 is about 4677.8243874690. The cubic root of 21882041 is about 279.7022387352.

The spelling of 21882041 in words is "twenty-one million, eight hundred eighty-two thousand, forty-one".