11858838 has 16 divisors (see below), whose sum is σ = 23870640. Its totient is φ = 3927456.

The previous prime is 11858813. The next prime is 11858839. The reversal of 11858838 is 83885811.

It is a self number, because there is not a number n which added to its sum of digits gives 11858838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858839) 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, 5353 + ... + 7236.

It is an arithmetic number, because the mean of its divisors is an integer number (1491915).

Almost surely, 2^11858838 is an apocalyptic number.

11858838 is an abundant number, since it is smaller than the sum of its proper divisors (12011802).

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

11858838 is a wasteful number, since it uses less digits than its factorization.

11858838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12751.

The product of its digits is 61440, while the sum is 42.

The square root of 11858838 is about 3443.6663601458. Note that the first 3 decimals coincide. The cubic root of 11858838 is about 228.0415821358.

The spelling of 11858838 in words is "eleven million, eight hundred fifty-eight thousand, eight hundred thirty-eight".