11112840 has 48 divisors (see below), whose sum is σ = 36117900. Its totient is φ = 2963328.

The previous prime is 11112823. The next prime is 11112847. The reversal of 11112840 is 4821111.

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 1340964 = 3126^2 + 1158^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11112847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15075 + ... + 15794.

Almost surely, 2^11112840 is an apocalyptic number.

11112840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112840 is an abundant number, since it is smaller than the sum of its proper divisors (25005060).

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

11112840 is a wasteful number, since it uses less digits than its factorization.

11112840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30886 (or 30879 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 11112840 is about 3333.5926565794. The cubic root of 11112840 is about 223.1558898457.

Adding to 11112840 its reverse (4821111), we get a palindrome (15933951).

The spelling of 11112840 in words is "eleven million, one hundred twelve thousand, eight hundred forty".