20838234 has 8 divisors (see below), whose sum is σ = 41676480. Its totient is φ = 6946076.

The previous prime is 20838227. The next prime is 20838263. The reversal of 20838234 is 43283802.

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

20838234 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736514 + ... + 1736525.

It is an arithmetic number, because the mean of its divisors is an integer number (5209560).

Almost surely, 2^20838234 is an apocalyptic number.

20838234 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.

20838234 is a wasteful number, since it uses less digits than its factorization.

20838234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473044.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20838234 is about 4564.8914554456. The cubic root of 20838234 is about 275.1821779094.

The spelling of 20838234 in words is "twenty million, eight hundred thirty-eight thousand, two hundred thirty-four".