1143630 has 48 divisors (see below), whose sum is σ = 3027024. Its totient is φ = 299520.

The previous prime is 1143619. The next prime is 1143643. The reversal of 1143630 is 363411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8665 + ... + 8795.

It is an arithmetic number, because the mean of its divisors is an integer number (63063).

2^1143630 is an apocalyptic number.

1143630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513512).

1143630 is an abundant number, since it is smaller than the sum of its proper divisors (1883394).

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

1143630 is a wasteful number, since it uses less digits than its factorization.

1143630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1143630 is about 1069.4063773889. The cubic root of 1143630 is about 104.5751540757.

The spelling of 1143630 in words is "one million, one hundred forty-three thousand, six hundred thirty".