201801828 has 24 divisors (see below), whose sum is σ = 471905280. Its totient is φ = 67119520.

The previous prime is 201801799. The next prime is 201801829. The reversal of 201801828 is 828108102.

It is a junction number, because it is equal to n+sod(n) for n = 201801795 and 201801804.

It is not an unprimeable number, because it can be changed into a prime (201801829) 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, 12708 + ... + 23771.

It is an arithmetic number, because the mean of its divisors is an integer number (19662720).

Almost surely, 2^201801828 is an apocalyptic number.

It is an amenable number.

201801828 is an abundant number, since it is smaller than the sum of its proper divisors (270103452).

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

201801828 is a wasteful number, since it uses less digits than its factorization.

201801828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36947 (or 36945 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 201801828 is about 14205.6970261934. The cubic root of 201801828 is about 586.5544922983.

The spelling of 201801828 in words is "two hundred one million, eight hundred one thousand, eight hundred twenty-eight".