200891520 has 96 divisors (see below), whose sum is σ = 693723420. Its totient is φ = 53569536.

The previous prime is 200891507. The next prime is 200891531. The reversal of 200891520 is 25198002.

200891520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 199826496 + 1065024 = 14136^2 + 1032^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11679 + ... + 23198.

Almost surely, 2^200891520 is an apocalyptic number.

200891520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200891520 is an abundant number, since it is smaller than the sum of its proper divisors (492831900).

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

200891520 is a wasteful number, since it uses less digits than its factorization.

200891520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34902 (or 34887 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 200891520 is about 14173.6205678013. The cubic root of 200891520 is about 585.6711997994.

It can be divided in two parts, 20089 and 1520, that added together give a square (21609 = 147²).

The spelling of 200891520 in words is "two hundred million, eight hundred ninety-one thousand, five hundred twenty".