200991648 has 144 divisors (see below), whose sum is σ = 625006368. Its totient is φ = 56221440.

The previous prime is 200991619. The next prime is 200991649. The reversal of 200991648 is 846199002.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (200991649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15460890 + ... + 15460902.

It is an arithmetic number, because the mean of its divisors is an integer number (4340322).

Almost surely, 2^200991648 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 200991648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312503184).

200991648 is an abundant number, since it is smaller than the sum of its proper divisors (424014720).

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

200991648 is an frugal number, since it uses more digits than its factorization.

200991648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 200991648 is about 14177.1523233688. The cubic root of 200991648 is about 585.7684867096.

200991648 divided by its sum of digits (39) gives a 5-th power (5153632 = 22⁵).

The spelling of 200991648 in words is "two hundred million, nine hundred ninety-one thousand, six hundred forty-eight".