11226691 has 16 divisors (see below), whose sum is σ = 13538304. Its totient is φ = 9101664.

The previous prime is 11226679. The next prime is 11226713. The reversal of 11226691 is 19662211.

11226691 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

11226691 is a nontrivial binomial coefficient, being equal to C(4739, 2).

It is a cyclic number.

It is not a de Polignac number, because 11226691 - 2⁷ = 11226563 is a prime.

It is a Duffinian number.

11226691 is strictly pandigital in base 8.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11226601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16245 + ... + 16921.

It is an arithmetic number, because the mean of its divisors is an integer number (846144).

Almost surely, 2^11226691 is an apocalyptic number.

11226691 is the 4738-th triangular number.

11226691 is the 1580-th centered nonagonal number.

11226691 is a deficient number, since it is larger than the sum of its proper divisors (2311613).

11226691 is a wasteful number, since it uses less digits than its factorization.

11226691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its digits is 1296, while the sum is 28.

The square root of 11226691 is about 3350.6254639992. The cubic root of 11226691 is about 223.9153791230.

The spelling of 11226691 in words is "eleven million, two hundred twenty-six thousand, six hundred ninety-one".