21882706 has 16 divisors (see below), whose sum is σ = 36267264. Its totient is φ = 9849664.

The previous prime is 21882703. The next prime is 21882739. The reversal of 21882706 is 60728812.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 7 ways as a sum of consecutive naturals, for example, 13210 + ... + 14773.

It is an arithmetic number, because the mean of its divisors is an integer number (2266704).

Almost surely, 2^21882706 is an apocalyptic number.

21882706 is a deficient number, since it is larger than the sum of its proper divisors (14384558).

21882706 is a wasteful number, since it uses less digits than its factorization.

21882706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28025.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 21882706 is about 4677.8954669809. The cubic root of 21882706 is about 279.7050721105.

The spelling of 21882706 in words is "twenty-one million, eight hundred eighty-two thousand, seven hundred six".