11857140 has 72 divisors (see below), whose sum is σ = 37870560. Its totient is φ = 2994624.

The previous prime is 11857127. The next prime is 11857147. The reversal of 11857140 is 4175811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11857147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1687 + ... + 5153.

It is an arithmetic number, because the mean of its divisors is an integer number (525980).

Almost surely, 2^11857140 is an apocalyptic number.

11857140 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 11857140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18935280).

11857140 is an abundant number, since it is smaller than the sum of its proper divisors (26013420).

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

11857140 is a wasteful number, since it uses less digits than its factorization.

11857140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 11857140 is about 3443.4198117569. The cubic root of 11857140 is about 228.0306976211.

The spelling of 11857140 in words is "eleven million, eight hundred fifty-seven thousand, one hundred forty".