11861290 has 32 divisors (see below), whose sum is σ = 25246080. Its totient is φ = 3925824.

The previous prime is 11861273. The next prime is 11861293. The reversal of 11861290 is 9216811.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11861293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892 + ... + 4951.

It is an arithmetic number, because the mean of its divisors is an integer number (788940).

Almost surely, 2^11861290 is an apocalyptic number.

11861290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11861290 is an abundant number, since it is smaller than the sum of its proper divisors (13384790).

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

11861290 is a wasteful number, since it uses less digits than its factorization.

11861290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5886.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11861290 is about 3444.0223576510. The cubic root of 11861290 is about 228.0572981058.

The spelling of 11861290 in words is "eleven million, eight hundred sixty-one thousand, two hundred ninety".