1161276 has 48 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 360640.

The previous prime is 1161269. The next prime is 1161289. The reversal of 1161276 is 6721611.

1161276 = T₃ + T₄ + ... + T₁₉₀.

1161276 is a modest number, since divided by 1276 gives 116 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16321 + ... + 16391.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2^1161276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520).

1161276 is an abundant number, since it is smaller than the sum of its proper divisors (1741764).

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

1161276 is a wasteful number, since it uses less digits than its factorization.

1161276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its digits is 504, while the sum is 24.

The square root of 1161276 is about 1077.6251667440. The cubic root of 1161276 is about 105.1102696432.

Adding to 1161276 its reverse (6721611), we get a palindrome (7882887).

The spelling of 1161276 in words is "one million, one hundred sixty-one thousand, two hundred seventy-six".