201790 has 16 divisors (see below), whose sum is σ = 384912. Its totient is φ = 75904.

The previous prime is 201787. The next prime is 201791. The reversal of 201790 is 97102.

201790 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424 + ... + 763.

It is an arithmetic number, because the mean of its divisors is an integer number (24057).

2²⁰¹⁷⁹⁰ is an apocalyptic number.

201790 is a deficient number, since it is larger than the sum of its proper divisors (183122).

201790 is a wasteful number, since it uses less digits than its factorization.

201790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 201790 is about 449.2104184010. The cubic root of 201790 is about 58.6543032372.

Adding to 201790 its reverse (97102), we get a palindrome (298892).

The spelling of 201790 in words is "two hundred one thousand, seven hundred ninety".