20330834 has 16 divisors (see below), whose sum is σ = 32089176. Its totient is φ = 9648000.

The previous prime is 20330833. The next prime is 20330839. The reversal of 20330834 is 43803302.

It can be written as a sum of positive squares in 4 ways, for example, as 15721225 + 4609609 = 3965^2 + 2147^2 .

It is a super-2 number, since 2×20330834² = 826685622271112, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20330833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317 + ... + 6384.

Almost surely, 2^20330834 is an apocalyptic number.

20330834 is a deficient number, since it is larger than the sum of its proper divisors (11758342).

20330834 is a wasteful number, since it uses less digits than its factorization.

20330834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6781.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20330834 is about 4508.9726102517. The cubic root of 20330834 is about 272.9302867342.

The spelling of 20330834 in words is "twenty million, three hundred thirty thousand, eight hundred thirty-four".