201026090 has 8 divisors (see below), whose sum is σ = 361846980. Its totient is φ = 80410432.

The previous prime is 201026081. The next prime is 201026093. The reversal of 201026090 is 90620102.

201026090 is digitally balanced in base 3, 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 200817241 + 208849 = 14171^2 + 457^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×201026090² = 80822977721376200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201026093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10051295 + ... + 10051314.

Almost surely, 2^201026090 is an apocalyptic number.

201026090 is a deficient number, since it is larger than the sum of its proper divisors (160820890).

201026090 is a wasteful number, since it uses less digits than its factorization.

201026090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20102616.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 201026090 is about 14178.3669722574. The cubic root of 201026090 is about 585.8019439637.

Adding to 201026090 its reverse (90620102), we get a palindrome (291646192).

The spelling of 201026090 in words is "two hundred one million, twenty-six thousand, ninety".