11891226 has 16 divisors (see below), whose sum is σ = 25034400. Its totient is φ = 3755088.

The previous prime is 11891203. The next prime is 11891251. The reversal of 11891226 is 62219811.

It is a happy number.

11891226 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 = 11891193 and 11891202.

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, 52041 + ... + 52268.

It is an arithmetic number, because the mean of its divisors is an integer number (1564650).

Almost surely, 2^11891226 is an apocalyptic number.

11891226 is an abundant number, since it is smaller than the sum of its proper divisors (13143174).

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

11891226 is a wasteful number, since it uses less digits than its factorization.

11891226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104333.

The product of its digits is 1728, while the sum is 30.

The square root of 11891226 is about 3448.3656998642. The cubic root of 11891226 is about 228.2489969792.

It can be divided in two parts, 1189 and 1226, that added together give a triangular number (2415 = T₆₉).

The spelling of 11891226 in words is "eleven million, eight hundred ninety-one thousand, two hundred twenty-six".