20621882 has 8 divisors (see below), whose sum is σ = 31930752. Its totient is φ = 9978300.

The previous prime is 20621827. The next prime is 20621891. The reversal of 20621882 is 28812602.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166244 + ... + 166367.

It is an arithmetic number, because the mean of its divisors is an integer number (3991344).

Almost surely, 2^20621882 is an apocalyptic number.

20621882 is a deficient number, since it is larger than the sum of its proper divisors (11308870).

20621882 is a wasteful number, since it uses less digits than its factorization.

20621882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332644.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 20621882 is about 4541.1322376694. The cubic root of 20621882 is about 274.2265074288.

The spelling of 20621882 in words is "twenty million, six hundred twenty-one thousand, eight hundred eighty-two".