20830375 has 8 divisors (see below), whose sum is σ = 25996464. Its totient is φ = 16664200.

The previous prime is 20830373. The next prime is 20830379. The reversal of 20830375 is 57303802.

It is not a de Polignac number, because 20830375 - 2¹ = 20830373 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 (20830373) 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, 83197 + ... + 83446.

It is an arithmetic number, because the mean of its divisors is an integer number (3249558).

Almost surely, 2^20830375 is an apocalyptic number.

20830375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20830375 is a deficient number, since it is larger than the sum of its proper divisors (5166089).

20830375 is an equidigital number, since it uses as much as digits as its factorization.

20830375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166658 (or 166648 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20830375 is about 4564.0305651913. The cubic root of 20830375 is about 275.1475791894.

The spelling of 20830375 in words is "twenty million, eight hundred thirty thousand, three hundred seventy-five".