11891238 has 16 divisors (see below), whose sum is σ = 24084480. Its totient is φ = 3913416.

The previous prime is 11891203. The next prime is 11891251. The reversal of 11891238 is 83219811.

11891238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11891199 and 11891208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12070 + ... + 13017.

It is an arithmetic number, because the mean of its divisors is an integer number (1505280).

Almost surely, 2^11891238 is an apocalyptic number.

11891238 is an abundant number, since it is smaller than the sum of its proper divisors (12193242).

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

11891238 is a wasteful number, since it uses less digits than its factorization.

11891238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25171.

The product of its digits is 3456, while the sum is 33.

The square root of 11891238 is about 3448.3674398184. The cubic root of 11891238 is about 228.2490737582.

The spelling of 11891238 in words is "eleven million, eight hundred ninety-one thousand, two hundred thirty-eight".