20882642 has 8 divisors (see below), whose sum is σ = 34171632. Its totient is φ = 9492100.

The previous prime is 20882633. The next prime is 20882663. The reversal of 20882642 is 24628802.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20882599 and 20882608.

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, 474584 + ... + 474627.

It is an arithmetic number, because the mean of its divisors is an integer number (4271454).

Almost surely, 2^20882642 is an apocalyptic number.

20882642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20882642 is a deficient number, since it is larger than the sum of its proper divisors (13288990).

20882642 is a wasteful number, since it uses less digits than its factorization.

20882642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949224.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 20882642 is about 4569.7529473703. The cubic root of 20882642 is about 275.3775178729.

The spelling of 20882642 in words is "twenty million, eight hundred eighty-two thousand, six hundred forty-two".