200328921 has 12 divisors (see below), whose sum is σ = 311622948. Its totient is φ = 123279264.

The previous prime is 200328907. The next prime is 200328929. The reversal of 200328921 is 129823002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11128896 + 189200025 = 3336^2 + 13755^2 .

It is not a de Polignac number, because 200328921 - 2⁵ = 200328889 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (200328929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855990 + ... + 856223.

It is an arithmetic number, because the mean of its divisors is an integer number (25968579).

Almost surely, 2^200328921 is an apocalyptic number.

It is an amenable number.

200328921 is a deficient number, since it is larger than the sum of its proper divisors (111294027).

200328921 is a wasteful number, since it uses less digits than its factorization.

200328921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712232 (or 1712229 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 200328921 is about 14153.7599598128. The cubic root of 200328921 is about 585.1239623343.

The spelling of 200328921 in words is "two hundred million, three hundred twenty-eight thousand, nine hundred twenty-one".