20906882 has 8 divisors (see below), whose sum is σ = 31383696. Its totient is φ = 10445652.

The previous prime is 20906863. The next prime is 20906903. The reversal of 20906882 is 28860902.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413 + ... + 6479.

It is an arithmetic number, because the mean of its divisors is an integer number (3922962).

Almost surely, 2^20906882 is an apocalyptic number.

20906882 is a deficient number, since it is larger than the sum of its proper divisors (10476814).

20906882 is a wasteful number, since it uses less digits than its factorization.

20906882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 20906882 is about 4572.4044003128. The cubic root of 20906882 is about 275.4840269043.

The spelling of 20906882 in words is "twenty million, nine hundred six thousand, eight hundred eighty-two".