200191056 has 160 divisors (see below), whose sum is σ = 586629120. Its totient is φ = 58406400.

The previous prime is 200191051. The next prime is 200191091. The reversal of 200191056 is 650191002.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200191051) 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, 1528111 + ... + 1528241.

It is an arithmetic number, because the mean of its divisors is an integer number (3666432).

Almost surely, 2^200191056 is an apocalyptic number.

200191056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200191056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293314560).

200191056 is an abundant number, since it is smaller than the sum of its proper divisors (386438064).

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

200191056 is a wasteful number, since it uses less digits than its factorization.

200191056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 200191056 is about 14148.8888609671. Note that the first 4 decimals coincide. The cubic root of 200191056 is about 584.9897054219.

The spelling of 200191056 in words is "two hundred million, one hundred ninety-one thousand, fifty-six".