11684538 has 12 divisors (see below), whose sum is σ = 25316538. Its totient is φ = 3894840.

The previous prime is 11684521. The next prime is 11684567. The reversal of 11684538 is 83548611.

11684538 is a `hidden beast` number, since 116 + 8 + 4 + 538 = 666.

11684538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11675889 + 8649 = 3417^2 + 93^2 .

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, 324553 + ... + 324588.

Almost surely, 2^11684538 is an apocalyptic number.

11684538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11684538 is an abundant number, since it is smaller than the sum of its proper divisors (13632000).

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

11684538 is a wasteful number, since it uses less digits than its factorization.

11684538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649149 (or 649146 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 11684538 is about 3418.2653495596. The cubic root of 11684538 is about 226.9188192573.

The spelling of 11684538 in words is "eleven million, six hundred eighty-four thousand, five hundred thirty-eight".