836820236 has 18 divisors (see below), whose sum is σ = 1703527308. Its totient is φ = 358637160.

The previous prime is 836820227. The next prime is 836820241. The reversal of 836820236 is 632028638.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 836820236.

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, 2134550 + ... + 2134941.

It is an arithmetic number, because the mean of its divisors is an integer number (94640406).

Almost surely, 2^836820236 is an apocalyptic number.

It is an amenable number.

836820236 is an abundant number, since it is smaller than the sum of its proper divisors (866707072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

836820236 is a wasteful number, since it uses less digits than its factorization.

836820236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4269509 (or 4269500 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 836820236 is about 28927.8453397414. The cubic root of 836820236 is about 942.3467228878.

The spelling of 836820236 in words is "eight hundred thirty-six million, eight hundred twenty thousand, two hundred thirty-six".