200705890 has 64 divisors (see below), whose sum is σ = 452521728. Its totient is φ = 62265600.

The previous prime is 200705867. The next prime is 200705891. The reversal of 200705890 is 98507002.

It is not an unprimeable number, because it can be changed into a prime (200705891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212820 + ... + 213760.

It is an arithmetic number, because the mean of its divisors is an integer number (7070652).

Almost surely, 2^200705890 is an apocalyptic number.

200705890 is an abundant number, since it is smaller than the sum of its proper divisors (251815838).

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

200705890 is a wasteful number, since it uses less digits than its factorization.

200705890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 200705890 is about 14167.0706216917. The cubic root of 200705890 is about 585.4907514189.

The spelling of 200705890 in words is "two hundred million, seven hundred five thousand, eight hundred ninety".