11853838 has 16 divisors (see below), whose sum is σ = 18711504. Its totient is φ = 5624640.

The previous prime is 11853817. The next prime is 11853839. The reversal of 11853838 is 83835811.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 11853797 and 11853806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11853839) 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, 1081 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (1169469).

Almost surely, 2^11853838 is an apocalyptic number.

11853838 is a deficient number, since it is larger than the sum of its proper divisors (6857666).

11853838 is a wasteful number, since it uses less digits than its factorization.

11853838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3987.

The product of its digits is 23040, while the sum is 37.

The square root of 11853838 is about 3442.9403131626. The cubic root of 11853838 is about 228.0095281747.

It can be divided in two parts, 118 and 53838, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 11853838 in words is "eleven million, eight hundred fifty-three thousand, eight hundred thirty-eight".