820200235 has 4 divisors (see below), whose sum is σ = 984240288. Its totient is φ = 656160184.

The previous prime is 820200229. The next prime is 820200247. The reversal of 820200235 is 532002028.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-820200235 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82020019 + ... + 82020028.

It is an arithmetic number, because the mean of its divisors is an integer number (246060072).

Almost surely, 2^820200235 is an apocalyptic number.

820200235 is a deficient number, since it is larger than the sum of its proper divisors (164040053).

820200235 is a wasteful number, since it uses less digits than its factorization.

820200235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164040052.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 820200235 is about 28639.1381678988. The cubic root of 820200235 is about 936.0663422885.

The spelling of 820200235 in words is "eight hundred twenty million, two hundred thousand, two hundred thirty-five".