20655834 has 8 divisors (see below), whose sum is σ = 41311680. Its totient is φ = 6885276.

The previous prime is 20655829. The next prime is 20655853. The reversal of 20655834 is 43855602.

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

20655834 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20655795 and 20655804.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721314 + ... + 1721325.

It is an arithmetic number, because the mean of its divisors is an integer number (5163960).

Almost surely, 2^20655834 is an apocalyptic number.

20655834 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.

20655834 is a wasteful number, since it uses less digits than its factorization.

20655834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442644.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 20655834 is about 4544.8689750091. The cubic root of 20655834 is about 274.3769210106.

The spelling of 20655834 in words is "twenty million, six hundred fifty-five thousand, eight hundred thirty-four".