11786838 has 16 divisors (see below), whose sum is σ = 26941440. Its totient is φ = 3367656.

The previous prime is 11786837. The next prime is 11786839. The reversal of 11786838 is 83868711.

It is an interprime number because it is at equal distance from previous prime (11786837) and next prime (11786839).

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 280639 = 11786838 / (1 + 1 + 7 + 8 + 6 + 8 + 3 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11786838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11786837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140278 + ... + 140361.

It is an arithmetic number, because the mean of its divisors is an integer number (1683840).

Almost surely, 2^11786838 is an apocalyptic number.

11786838 is an abundant number, since it is smaller than the sum of its proper divisors (15154602).

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

11786838 is a wasteful number, since it uses less digits than its factorization.

11786838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280651.

The product of its digits is 64512, while the sum is 42.

The square root of 11786838 is about 3433.1964697640. The cubic root of 11786838 is about 227.5791327984.

The spelling of 11786838 in words is "eleven million, seven hundred eighty-six thousand, eight hundred thirty-eight".