11787140 has 12 divisors (see below), whose sum is σ = 24753036. Its totient is φ = 4714848.

The previous prime is 11787133. The next prime is 11787157. The reversal of 11787140 is 4178711.

It can be written as a sum of positive squares in 2 ways, for example, as 8773444 + 3013696 = 2962^2 + 1736^2 .

It is a super-3 number, since 3×11787140³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 294659 + ... + 294698.

It is an arithmetic number, because the mean of its divisors is an integer number (2062753).

Almost surely, 2^11787140 is an apocalyptic number.

11787140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11787140 is an abundant number, since it is smaller than the sum of its proper divisors (12965896).

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

11787140 is a wasteful number, since it uses less digits than its factorization.

11787140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589366 (or 589364 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 11787140 is about 3433.2404518181. The cubic root of 11787140 is about 227.5810764441.

The spelling of 11787140 in words is "eleven million, seven hundred eighty-seven thousand, one hundred forty".