20834738 has 8 divisors (see below), whose sum is σ = 31320432. Its totient is φ = 10394596.

The previous prime is 20834717. The next prime is 20834761. The reversal of 20834738 is 83743802.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20834698 and 20834707.

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, 10220 + ... + 12087.

It is an arithmetic number, because the mean of its divisors is an integer number (3915054).

Almost surely, 2^20834738 is an apocalyptic number.

20834738 is a deficient number, since it is larger than the sum of its proper divisors (10485694).

20834738 is a wasteful number, since it uses less digits than its factorization.

20834738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22776.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 20834738 is about 4564.5085168066. The cubic root of 20834738 is about 275.1667880784.

The spelling of 20834738 in words is "twenty million, eight hundred thirty-four thousand, seven hundred thirty-eight".