11185140 has 24 divisors (see below), whose sum is σ = 31318560. Its totient is φ = 2982688.

The previous prime is 11185103. The next prime is 11185147. The reversal of 11185140 is 4158111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11185147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93150 + ... + 93269.

It is an arithmetic number, because the mean of its divisors is an integer number (1304940).

Almost surely, 2^11185140 is an apocalyptic number.

11185140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11185140 is an abundant number, since it is smaller than the sum of its proper divisors (20133420).

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

11185140 is a wasteful number, since it uses less digits than its factorization.

11185140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186431 (or 186429 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

The square root of 11185140 is about 3344.4192320940. The cubic root of 11185140 is about 223.6387939214.

It can be divided in two parts, 11185 and 140, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 11185140 in words is "eleven million, one hundred eighty-five thousand, one hundred forty".