11838156 has 72 divisors (see below), whose sum is σ = 31460352. Its totient is φ = 3458400.

The previous prime is 11838131. The next prime is 11838179. The reversal of 11838156 is 65183811.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44881 + ... + 45143.

Almost surely, 2^11838156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11838156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15730176).

11838156 is an abundant number, since it is smaller than the sum of its proper divisors (19622196).

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

11838156 is a wasteful number, since it uses less digits than its factorization.

11838156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 310 counting only the distinct ones).

The product of its digits is 5760, while the sum is 33.

The square root of 11838156 is about 3440.6621455761. The cubic root of 11838156 is about 227.9089356246.

It can be divided in two parts, 1183 and 8156, that added together give a palindrome (9339).

The spelling of 11838156 in words is "eleven million, eight hundred thirty-eight thousand, one hundred fifty-six".