20829275 has 6 divisors (see below), whose sum is σ = 25828332. Its totient is φ = 16663400.

The previous prime is 20829269. The next prime is 20829313. The reversal of 20829275 is 57292802.

It is not a de Polignac number, because 20829275 - 2⁸ = 20829019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 416561 + ... + 416610.

It is an arithmetic number, because the mean of its divisors is an integer number (4304722).

Almost surely, 2^20829275 is an apocalyptic number.

20829275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20829275 is a deficient number, since it is larger than the sum of its proper divisors (4999057).

20829275 is an equidigital number, since it uses as much as digits as its factorization.

20829275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833181 (or 833176 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 20829275 is about 4563.9100560813. The cubic root of 20829275 is about 275.1427358190.

The spelling of 20829275 in words is "twenty million, eight hundred twenty-nine thousand, two hundred seventy-five".