202290 has 32 divisors (see below), whose sum is σ = 530496. Its totient is φ = 48960.

The previous prime is 202289. The next prime is 202291. The reversal of 202290 is 92202.

It is an interprime number because it is at equal distance from previous prime (202289) and next prime (202291).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24 + ... + 636.

It is an arithmetic number, because the mean of its divisors is an integer number (16578).

2²⁰²²⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265248).

202290 is an abundant number, since it is smaller than the sum of its proper divisors (328206).

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

202290 is a wasteful number, since it uses less digits than its factorization.

202290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 202290 is about 449.7666061415. The cubic root of 202290 is about 58.7027082827.

Adding to 202290 its reverse (92202), we get a palindrome (294492).

It can be divided in two parts, 2022 and 90, that added together give a palindrome (2112).

The spelling of 202290 in words is "two hundred two thousand, two hundred ninety".