11829381 has 32 divisors (see below), whose sum is σ = 17510400. Its totient is φ = 7076160.

The previous prime is 11829373. The next prime is 11829401. The reversal of 11829381 is 18392811.

It is not a de Polignac number, because 11829381 - 2³ = 11829373 is a prime.

It is a super-2 number, since 2×11829381² = 279868509686322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11829341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149700 + ... + 149778.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^11829381 is an apocalyptic number.

It is an amenable number.

11829381 is a deficient number, since it is larger than the sum of its proper divisors (5681019).

11829381 is a wasteful number, since it uses less digits than its factorization.

11829381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209.

The product of its digits is 3456, while the sum is 33.

The square root of 11829381 is about 3439.3867185881. The cubic root of 11829381 is about 227.8526094183.

The spelling of 11829381 in words is "eleven million, eight hundred twenty-nine thousand, three hundred eighty-one".