201491024 has 40 divisors (see below), whose sum is σ = 448780800. Its totient is φ = 85845888.

The previous prime is 201490997. The next prime is 201491027. The reversal of 201491024 is 420194102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201491027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14177 + ... + 24575.

It is an arithmetic number, because the mean of its divisors is an integer number (11219520).

Almost surely, 2^201491024 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 201491024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224390400).

201491024 is an abundant number, since it is smaller than the sum of its proper divisors (247289776).

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

201491024 is a wasteful number, since it uses less digits than its factorization.

201491024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10587 (or 10581 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 201491024 is about 14194.7533969421. The cubic root of 201491024 is about 586.2532113244.

The spelling of 201491024 in words is "two hundred one million, four hundred ninety-one thousand, twenty-four".