1115560640 has 28 divisors (see below), whose sum is σ = 2656429536. Its totient is φ = 446224128.

The previous prime is 1115560639. The next prime is 1115560643. The reversal of 1115560640 is 460655111.

It is not an unprimeable number, because it can be changed into a prime (1115560643) 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, 1742744 + ... + 1743383.

Almost surely, 2^1115560640 is an apocalyptic number.

1115560640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115560640 is an abundant number, since it is smaller than the sum of its proper divisors (1540868896).

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

1115560640 is an equidigital number, since it uses as much as digits as its factorization.

1115560640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3486144 (or 3486134 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 1115560640 is about 33400.0095808369. The cubic root of 1115560640 is about 1037.1248992879.

It can be divided in two parts, 1115560 and 640, that multiplied together give a square (713958400 = 26720²).

The spelling of 1115560640 in words is "one billion, one hundred fifteen million, five hundred sixty thousand, six hundred forty".