11861154 has 40 divisors (see below), whose sum is σ = 26780688. Its totient is φ = 3923640.

The previous prime is 11861141. The next prime is 11861159. The reversal of 11861154 is 45116811.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11861159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34009 + ... + 34355.

Almost surely, 2^11861154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11861154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13390344).

11861154 is an abundant number, since it is smaller than the sum of its proper divisors (14919534).

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

11861154 is a wasteful number, since it uses less digits than its factorization.

11861154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 563 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 11861154 is about 3444.0026132394. The cubic root of 11861154 is about 228.0564264774.

Adding to 11861154 its reverse (45116811), we get a palindrome (56977965).

The spelling of 11861154 in words is "eleven million, eight hundred sixty-one thousand, one hundred fifty-four".