1113640 has 32 divisors (see below), whose sum is σ = 2734560. Its totient is φ = 404800.

The previous prime is 1113617. The next prime is 1113643. The reversal of 1113640 is 463111.

It is not an unprimeable number, because it can be changed into a prime (1113643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 826 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (85455).

2^1113640 is an apocalyptic number.

1113640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113640 is an abundant number, since it is smaller than the sum of its proper divisors (1620920).

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

1113640 is a wasteful number, since it uses less digits than its factorization.

1113640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1113640 is about 1055.2914289427. The cubic root of 1113640 is about 103.6529357831.

Adding to 1113640 its reverse (463111), we get a palindrome (1576751).

The spelling of 1113640 in words is "one million, one hundred thirteen thousand, six hundred forty".