11813286 has 32 divisors (see below), whose sum is σ = 24514560. Its totient is φ = 3792096.

The previous prime is 11813281. The next prime is 11813287. The reversal of 11813286 is 68231811.

It is a super-2 number, since 2×11813286² = 279107452235592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813281) 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, 27985 + ... + 28403.

It is an arithmetic number, because the mean of its divisors is an integer number (766080).

Almost surely, 2^11813286 is an apocalyptic number.

11813286 is an abundant number, since it is smaller than the sum of its proper divisors (12701274).

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

11813286 is a wasteful number, since it uses less digits than its factorization.

11813286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588.

The product of its digits is 2304, while the sum is 30.

The square root of 11813286 is about 3437.0461154893. The cubic root of 11813286 is about 227.7492241203.

The spelling of 11813286 in words is "eleven million, eight hundred thirteen thousand, two hundred eighty-six".