11865140 has 24 divisors (see below), whose sum is σ = 28476672. Its totient is φ = 4068000.

The previous prime is 11865131. The next prime is 11865143. The reversal of 11865140 is 4156811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11865143) 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, 42236 + ... + 42515.

It is an arithmetic number, because the mean of its divisors is an integer number (1186528).

Almost surely, 2^11865140 is an apocalyptic number.

11865140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11865140 is an abundant number, since it is smaller than the sum of its proper divisors (16611532).

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

11865140 is a wasteful number, since it uses less digits than its factorization.

11865140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84767 (or 84765 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 11865140 is about 3444.5812517634. The cubic root of 11865140 is about 228.0819701163.

The spelling of 11865140 in words is "eleven million, eight hundred sixty-five thousand, one hundred forty".