11556426 has 16 divisors (see below), whose sum is σ = 26414784. Its totient is φ = 3301824.

The previous prime is 11556409. The next prime is 11556431. The reversal of 11556426 is 62465511.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11556393 and 11556402.

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, 137535 + ... + 137618.

It is an arithmetic number, because the mean of its divisors is an integer number (1650924).

Almost surely, 2^11556426 is an apocalyptic number.

11556426 is an abundant number, since it is smaller than the sum of its proper divisors (14858358).

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

11556426 is a wasteful number, since it uses less digits than its factorization.

11556426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275165.

The product of its digits is 7200, while the sum is 30.

The square root of 11556426 is about 3399.4743711345. The cubic root of 11556426 is about 226.0864393812.

The spelling of 11556426 in words is "eleven million, five hundred fifty-six thousand, four hundred twenty-six".