11845638 has 48 divisors (see below), whose sum is σ = 30060576. Its totient is φ = 3300480.

The previous prime is 11845619. The next prime is 11845657. The reversal of 11845638 is 83654811.

11845638 is a `hidden beast` number, since 1 + 18 + 4 + 5 + 638 = 666.

It is an interprime number because it is at equal distance from previous prime (11845619) and next prime (11845657).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4020 + ... + 6312.

It is an arithmetic number, because the mean of its divisors is an integer number (626262).

Almost surely, 2^11845638 is an apocalyptic number.

11845638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11845638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15030288).

11845638 is an abundant number, since it is smaller than the sum of its proper divisors (18214938).

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

11845638 is a wasteful number, since it uses less digits than its factorization.

11845638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349 (or 2346 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 11845638 is about 3441.7492645456. The cubic root of 11845638 is about 227.9569401601.

The spelling of 11845638 in words is "eleven million, eight hundred forty-five thousand, six hundred thirty-eight".