202306 has 16 divisors (see below), whose sum is σ = 338688. Its totient is φ = 90000.

The previous prime is 202291. The next prime is 202309. The reversal of 202306 is 603202.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (202309) 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, 681 + ... + 931.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2²⁰²³⁰⁶ is an apocalyptic number.

202306 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

202306 is a deficient number, since it is larger than the sum of its proper divisors (136382).

202306 is a wasteful number, since it uses less digits than its factorization.

202306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 202306 is about 449.7843927928. The cubic root of 202306 is about 58.7042559265.

Adding to 202306 its reverse (603202), we get a palindrome (805508).

The spelling of 202306 in words is "two hundred two thousand, three hundred six".