11856890 has 8 divisors (see below), whose sum is σ = 21342420. Its totient is φ = 4742752.

The previous prime is 11856883. The next prime is 11856899. The reversal of 11856890 is 9865811.

It can be written as a sum of positive squares in 2 ways, for example, as 11202409 + 654481 = 3347^2 + 809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11856899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 592835 + ... + 592854.

Almost surely, 2^11856890 is an apocalyptic number.

11856890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11856890 is a deficient number, since it is larger than the sum of its proper divisors (9485530).

11856890 is a wasteful number, since it uses less digits than its factorization.

11856890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185696.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 11856890 is about 3443.3835104443. The cubic root of 11856890 is about 228.0290949841.

The spelling of 11856890 in words is "eleven million, eight hundred fifty-six thousand, eight hundred ninety".