20830061 has 12 divisors (see below), whose sum is σ = 25127712. Its totient is φ = 16912584.

The previous prime is 20830057. The next prime is 20830067. The reversal of 20830061 is 16003802.

It is not a de Polignac number, because 20830061 - 2² = 20830057 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20830067) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1595 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (2093976).

Almost surely, 2^20830061 is an apocalyptic number.

It is an amenable number.

20830061 is a deficient number, since it is larger than the sum of its proper divisors (4297651).

20830061 is an equidigital number, since it uses as much as digits as its factorization.

20830061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8288 (or 8269 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20830061 is about 4563.9961656426. The cubic root of 20830061 is about 275.1461966447.

Adding to 20830061 its reverse (16003802), we get a palindrome (36833863).

The spelling of 20830061 in words is "twenty million, eight hundred thirty thousand, sixty-one".