1111040656 has 80 divisors (see below), whose sum is σ = 2502339840. Its totient is φ = 472556160.

The previous prime is 1111040653. The next prime is 1111040683. The reversal of 1111040656 is 6560401111.

It is a super-2 number, since 2×1111040656² = 2468822678569820672, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1111040656.

It is not an unprimeable number, because it can be changed into a prime (1111040653) 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, 275551 + ... + 279553.

It is an arithmetic number, because the mean of its divisors is an integer number (31279248).

Almost surely, 2^1111040656 is an apocalyptic number.

1111040656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111040656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1251169920).

1111040656 is an abundant number, since it is smaller than the sum of its proper divisors (1391299184).

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

1111040656 is a wasteful number, since it uses less digits than its factorization.

1111040656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4118 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1111040656 is about 33332.2764899129. The cubic root of 1111040656 is about 1035.7222761474.

Adding to 1111040656 its reverse (6560401111), we get a palindrome (7671441767).

The spelling of 1111040656 in words is "one billion, one hundred eleven million, forty thousand, six hundred fifty-six".