200081970 has 144 divisors (see below), whose sum is σ = 602521920. Its totient is φ = 45904320.

The previous prime is 200081941. The next prime is 200081983. The reversal of 200081970 is 79180002.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 206427 + ... + 207393.

It is an arithmetic number, because the mean of its divisors is an integer number (4184180).

Almost surely, 2^200081970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200081970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301260960).

200081970 is an abundant number, since it is smaller than the sum of its proper divisors (402439950).

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

200081970 is a wasteful number, since it uses less digits than its factorization.

200081970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1007 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 200081970 is about 14145.0334039903. The cubic root of 200081970 is about 584.8834306416.

The spelling of 200081970 in words is "two hundred million, eighty-one thousand, nine hundred seventy".