21802882 has 8 divisors (see below), whose sum is σ = 32726016. Its totient is φ = 10894212.

The previous prime is 21802871. The next prime is 21802883. The reversal of 21802882 is 28820812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21802883) 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, 1743 + ... + 6829.

It is an arithmetic number, because the mean of its divisors is an integer number (4090752).

Almost surely, 2^21802882 is an apocalyptic number.

21802882 is a deficient number, since it is larger than the sum of its proper divisors (10923134).

21802882 is a wasteful number, since it uses less digits than its factorization.

21802882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232.

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 21802882 is about 4669.3556300629. The cubic root of 21802882 is about 279.3645538754.

The spelling of 21802882 in words is "twenty-one million, eight hundred two thousand, eight hundred eighty-two".