20830966 has 16 divisors (see below), whose sum is σ = 33730704. Its totient is φ = 9591264.

The previous prime is 20830949. The next prime is 20830991. The reversal of 20830966 is 66903802.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 15285 + ... + 16591.

It is an arithmetic number, because the mean of its divisors is an integer number (2108169).

Almost surely, 2^20830966 is an apocalyptic number.

20830966 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20830966 is a deficient number, since it is larger than the sum of its proper divisors (12899738).

20830966 is a wasteful number, since it uses less digits than its factorization.

20830966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 20830966 is about 4564.0953101354. The cubic root of 20830966 is about 275.1501813298.

The spelling of 20830966 in words is "twenty million, eight hundred thirty thousand, nine hundred sixty-six".