20298205 has 8 divisors (see below), whose sum is σ = 24817752. Its totient is φ = 15931968.

The previous prime is 20298203. The next prime is 20298217. The reversal of 20298205 is 50289202.

It can be written as a sum of positive squares in 4 ways, for example, as 8173881 + 12124324 = 2859^2 + 3482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20298205 - 2¹ = 20298203 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 (20298203) 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, 38034 + ... + 38563.

It is an arithmetic number, because the mean of its divisors is an integer number (3102219).

Almost surely, 2^20298205 is an apocalyptic number.

It is an amenable number.

20298205 is a deficient number, since it is larger than the sum of its proper divisors (4519547).

20298205 is an equidigital number, since it uses as much as digits as its factorization.

20298205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76655.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 20298205 is about 4505.3529273521. The cubic root of 20298205 is about 272.7841997497.

It can be divided in two parts, 20298 and 205, that added together give a triangular number (20503 = T₂₀₂).

The spelling of 20298205 in words is "twenty million, two hundred ninety-eight thousand, two hundred five".