200973636 has 84 divisors (see below), whose sum is σ = 540497244. Its totient is φ = 65357280.

The previous prime is 200973631. The next prime is 200973649. The reversal of 200973636 is 636379002.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

200973636 is a `hidden beast` number, since 200 + 97 + 363 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38564100 + 162409536 = 6210^2 + 12744^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 200973636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200973631) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4901776 + ... + 4901816.

It is an arithmetic number, because the mean of its divisors is an integer number (6434491).

Almost surely, 2^200973636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200973636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270248622).

200973636 is an abundant number, since it is smaller than the sum of its proper divisors (339523608).

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

200973636 is an frugal number, since it uses more digits than its factorization.

200973636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 200973636 is about 14176.5170616763. The cubic root of 200973636 is about 585.7509881763.

The spelling of 200973636 in words is "two hundred million, nine hundred seventy-three thousand, six hundred thirty-six".