201090720 has 48 divisors (see below), whose sum is σ = 633437280. Its totient is φ = 53624064.

The previous prime is 201090719. The next prime is 201090731. The reversal of 201090720 is 27090102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208990 + ... + 209949.

It is an arithmetic number, because the mean of its divisors is an integer number (13196610).

Almost surely, 2^201090720 is an apocalyptic number.

201090720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201090720 is an abundant number, since it is smaller than the sum of its proper divisors (432346560).

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

201090720 is a wasteful number, since it uses less digits than its factorization.

201090720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418957 (or 418949 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 201090720 is about 14180.6459655405. The cubic root of 201090720 is about 585.8647157877.

The spelling of 201090720 in words is "two hundred one million, ninety thousand, seven hundred twenty".