20830034 has 4 divisors (see below), whose sum is σ = 31245054. Its totient is φ = 10415016.

The previous prime is 20830027. The next prime is 20830037. The reversal of 20830034 is 43003802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12145225 + 8684809 = 3485^2 + 2947^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20829988 and 20830015.

It is not an unprimeable number, because it can be changed into a prime (20830037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207507 + ... + 5207510.

Almost surely, 2^20830034 is an apocalyptic number.

20830034 is a deficient number, since it is larger than the sum of its proper divisors (10415020).

20830034 is a wasteful number, since it uses less digits than its factorization.

20830034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415019.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20830034 is about 4563.9932077075. The cubic root of 20830034 is about 275.1460777628.

Adding to 20830034 its reverse (43003802), we get a palindrome (63833836).

The spelling of 20830034 in words is "twenty million, eight hundred thirty thousand, thirty-four".