30836 has 12 divisors (see below), whose sum is σ = 58212. Its totient is φ = 14208.

The previous prime is 30829. The next prime is 30839. The reversal of 30836 is 63803.

30836 = T₅ + T₆ + ... + T₅₆.

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 19600 = 106^2 + 140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30839) by changing a digit.

30836 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245 + ... + 348.

It is an arithmetic number, because the mean of its divisors is an integer number (4851).

2³⁰⁸³⁶ is an apocalyptic number.

It is an amenable number.

30836 is a deficient number, since it is larger than the sum of its proper divisors (27376).

30836 is a wasteful number, since it uses less digits than its factorization.

30836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 30836 is about 175.6018223140. The cubic root of 30836 is about 31.3583121575.

The spelling of 30836 in words is "thirty thousand, eight hundred thirty-six".