11909056 has 28 divisors (see below), whose sum is σ = 23746968. Its totient is φ = 5925632.

The previous prime is 11909039. The next prime is 11909057. The reversal of 11909056 is 65090911.

It is a super-2 number, since 2×11909056² = 283651229622272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11909057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19995 + ... + 20581.

It is an arithmetic number, because the mean of its divisors is an integer number (848106).

Almost surely, 2^11909056 is an apocalyptic number.

11909056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11909056 is a deficient number, since it is larger than the sum of its proper divisors (11837912).

11909056 is an equidigital number, since it uses as much as digits as its factorization.

11909056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 11909056 is about 3450.9500141265. The cubic root of 11909056 is about 228.3630207491.

Adding to 11909056 its reverse (65090911), we get a palindrome (76999967).

It can be divided in two parts, 1190905 and 6, that added together give a palindrome (1190911).

The spelling of 11909056 in words is "eleven million, nine hundred nine thousand, fifty-six".