1131672 has 32 divisors (see below), whose sum is σ = 2879280. Its totient is φ = 370560.

The previous prime is 1131671. The next prime is 1131677. The reversal of 1131672 is 2761311.

It is an Ulam number.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1078 + ... + 1850.

2^1131672 is an apocalyptic number.

1131672 is a gapful number since it is divisible by the number (12) 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 1131672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1439640).

1131672 is an abundant number, since it is smaller than the sum of its proper divisors (1747608).

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

1131672 is a wasteful number, since it uses less digits than its factorization.

1131672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 839 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1131672 is about 1063.8007332203. The cubic root of 1131672 is about 104.2093907587.

Adding to 1131672 its reverse (2761311), we get a palindrome (3892983).

The spelling of 1131672 in words is "one million, one hundred thirty-one thousand, six hundred seventy-two".