1143480 has 64 divisors (see below), whose sum is σ = 3699360. Its totient is φ = 281088.

The previous prime is 1143473. The next prime is 1143481. The reversal of 1143480 is 843411.

1143480 is nontrivially palindromic in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143481) 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, 1194 + ... + 1926.

2^1143480 is an apocalyptic number.

1143480 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 1143480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1849680).

1143480 is an abundant number, since it is smaller than the sum of its proper divisors (2555880).

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

1143480 is a wasteful number, since it uses less digits than its factorization.

1143480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1143480 is about 1069.3362427226. The cubic root of 1143480 is about 104.5705818047.

Adding to 1143480 its reverse (843411), we get a palindrome (1986891).

The spelling of 1143480 in words is "one million, one hundred forty-three thousand, four hundred eighty".