11156040 has 192 divisors, whose sum is σ = 43804800. Its totient is φ = 2405376.

The previous prime is 11156009. The next prime is 11156051. The reversal of 11156040 is 4065111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47764 + ... + 47996.

It is an arithmetic number, because the mean of its divisors is an integer number (228150).

Almost surely, 2^11156040 is an apocalyptic number.

11156040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11156040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21902400).

11156040 is an abundant number, since it is smaller than the sum of its proper divisors (32648760).

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

11156040 is a wasteful number, since it uses less digits than its factorization.

11156040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 11156040 is about 3340.0658676140. The cubic root of 11156040 is about 223.4446809924. Note that the first 3 decimals are identical.

The spelling of 11156040 in words is "eleven million, one hundred fifty-six thousand, forty".