21882763 has 12 divisors (see below), whose sum is σ = 25782240. Its totient is φ = 18515952.

The previous prime is 21882739. The next prime is 21882781. The reversal of 21882763 is 36728812.

It is not a de Polignac number, because 21882763 - 2¹³ = 21874571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21882703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045 + ... + 6697.

It is an arithmetic number, because the mean of its divisors is an integer number (2148520).

Almost surely, 2^21882763 is an apocalyptic number.

21882763 is a deficient number, since it is larger than the sum of its proper divisors (3899477).

21882763 is an equidigital number, since it uses as much as digits as its factorization.

21882763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5746 (or 5739 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 21882763 is about 4677.9015594602. The cubic root of 21882763 is about 279.7053149686.

The spelling of 21882763 in words is "twenty-one million, eight hundred eighty-two thousand, seven hundred sixty-three".