11156004 has 36 divisors (see below), whose sum is σ = 28304640. Its totient is φ = 3704880.

The previous prime is 11156003. The next prime is 11156009. The reversal of 11156004 is 40065111.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (11156003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15157 + ... + 15875.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^11156004 is an apocalyptic number.

It is an amenable number.

11156004 is an abundant number, since it is smaller than the sum of its proper divisors (17148636).

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

11156004 is a wasteful number, since it uses less digits than its factorization.

11156004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1155 counting only the distinct ones).

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

The square root of 11156004 is about 3340.0604784944. The cubic root of 11156004 is about 223.4444406438. Note that the first 5 decimals are identical.

The spelling of 11156004 in words is "eleven million, one hundred fifty-six thousand, four".