21192882 has 8 divisors (see below), whose sum is σ = 42385776. Its totient is φ = 7064292.

The previous prime is 21192877. The next prime is 21192887. The reversal of 21192882 is 28829112.

It is an interprime number because it is at equal distance from previous prime (21192877) and next prime (21192887).

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

21192882 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (21192887) 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, 1766068 + ... + 1766079.

It is an arithmetic number, because the mean of its divisors is an integer number (5298222).

Almost surely, 2^21192882 is an apocalyptic number.

21192882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21192882 is a wasteful number, since it uses less digits than its factorization.

21192882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532152.

The product of its digits is 4608, while the sum is 33.

The square root of 21192882 is about 4603.5727429899. The cubic root of 21192882 is about 276.7345221541.

The spelling of 21192882 in words is "twenty-one million, one hundred ninety-two thousand, eight hundred eighty-two".