11812356 has 18 divisors (see below), whose sum is σ = 29859102. Its totient is φ = 3937440.

The previous prime is 11812343. The next prime is 11812379. The reversal of 11812356 is 65321811.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 4161600 = 2766^2 + 2040^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164025 + ... + 164096.

It is an arithmetic number, because the mean of its divisors is an integer number (1658839).

Almost surely, 2^11812356 is an apocalyptic number.

It is an amenable number.

11812356 is an abundant number, since it is smaller than the sum of its proper divisors (18046746).

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

11812356 is a wasteful number, since it uses less digits than its factorization.

11812356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328131 (or 328126 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 11812356 is about 3436.9108222356. The cubic root of 11812356 is about 227.7432474503.

The spelling of 11812356 in words is "eleven million, eight hundred twelve thousand, three hundred fifty-six".