1131678 has 32 divisors (see below), whose sum is σ = 2649600. Its totient is φ = 357048.

The previous prime is 1131677. The next prime is 1131701. The reversal of 1131678 is 8761311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131671) 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, 475 + ... + 1577.

It is an arithmetic number, because the mean of its divisors is an integer number (82800).

2^1131678 is an apocalyptic number.

1131678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324800).

1131678 is an abundant number, since it is smaller than the sum of its proper divisors (1517922).

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

1131678 is a wasteful number, since it uses less digits than its factorization.

1131678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133 (or 1127 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1131678 is about 1063.8035532936. The cubic root of 1131678 is about 104.2095749273.

1131678 divided by its sum of digits (27) gives a palindrome (41914).

Adding to 1131678 its reverse (8761311), we get a palindrome (9892989).

The spelling of 1131678 in words is "one million, one hundred thirty-one thousand, six hundred seventy-eight".