1132640 has 24 divisors (see below), whose sum is σ = 2676240. Its totient is φ = 452992.

The previous prime is 1132639. The next prime is 1132643. The reversal of 1132640 is 462311.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380 + ... + 3699.

It is an arithmetic number, because the mean of its divisors is an integer number (111510).

2^1132640 is an apocalyptic number.

1132640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1132640 is an abundant number, since it is smaller than the sum of its proper divisors (1543600).

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

1132640 is an equidigital number, since it uses as much as digits as its factorization.

1132640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1132640 is about 1064.2556083949. The cubic root of 1132640 is about 104.2390948727.

Adding to 1132640 its reverse (462311), we get a palindrome (1594951).

The spelling of 1132640 in words is "one million, one hundred thirty-two thousand, six hundred forty".