1130640 has 80 divisors (see below), whose sum is σ = 4011648. Its totient is φ = 258048.

The previous prime is 1130639. The next prime is 1130641. The reversal of 1130640 is 460311.

It is an interprime number because it is at equal distance from previous prime (1130639) and next prime (1130641).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1130641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1344 + ... + 2016.

2^1130640 is an apocalyptic number.

1130640 is a gapful number since it is divisible by the number (10) 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 1130640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005824).

1130640 is an abundant number, since it is smaller than the sum of its proper divisors (2881008).

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

1130640 is a wasteful number, since it uses less digits than its factorization.

1130640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1130640 is about 1063.3155693396. The cubic root of 1130640 is about 104.1777040749.

Adding to 1130640 its reverse (460311), we get a palindrome (1590951).

It can be divided in two parts, 1130 and 640, that added together give a triangular number (1770 = T₅₉).

The spelling of 1130640 in words is "one million, one hundred thirty thousand, six hundred forty".