11871090 has 128 divisors (see below), whose sum is σ = 39536640. Its totient is φ = 2462400.

The previous prime is 11871077. The next prime is 11871091. The reversal of 11871090 is 9017811.

11871090 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11871091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20505 + ... + 21075.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

Almost surely, 2^11871090 is an apocalyptic number.

11871090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11871090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19768320).

11871090 is an abundant number, since it is smaller than the sum of its proper divisors (27665550).

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

11871090 is a wasteful number, since it uses less digits than its factorization.

11871090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

The square root of 11871090 is about 3445.4448188877. Note that the first 3 decimals coincide. The cubic root of 11871090 is about 228.1200890918.

The spelling of 11871090 in words is "eleven million, eight hundred seventy-one thousand, ninety".