11123456 has 18 divisors (see below), whose sum is σ = 22203972. Its totient is φ = 5561600.

The previous prime is 11123393. The next prime is 11123471. The reversal of 11123456 is 65432111.

It is a plaindrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21470 + ... + 21981.

It is an arithmetic number, because the mean of its divisors is an integer number (1233554).

Almost surely, 2^11123456 is an apocalyptic number.

11123456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11123456 is a deficient number, since it is larger than the sum of its proper divisors (11080516).

11123456 is an frugal number, since it uses more digits than its factorization.

11123456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43467 (or 43453 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 11123456 is about 3335.1845526147. The cubic root of 11123456 is about 223.2269268611.

Adding to 11123456 its reverse (65432111), we get a palindrome (76555567).

The spelling of 11123456 in words is "eleven million, one hundred twenty-three thousand, four hundred fifty-six".