20830934 has 8 divisors (see below), whose sum is σ = 31268160. Its totient is φ = 10408216.

The previous prime is 20830907. The next prime is 20830937. The reversal of 20830934 is 43903802.

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

It is a super-2 number, since 2×20830934² = 867855622624712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20830897 and 20830906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1307 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (3908520).

Almost surely, 2^20830934 is an apocalyptic number.

20830934 is a deficient number, since it is larger than the sum of its proper divisors (10437226).

20830934 is a wasteful number, since it uses less digits than its factorization.

20830934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20830934 is about 4564.0918045105. The cubic root of 20830934 is about 275.1500404369.

The spelling of 20830934 in words is "twenty million, eight hundred thirty thousand, nine hundred thirty-four".