1155276 has 48 divisors (see below), whose sum is σ = 3158400. Its totient is φ = 364176.

The previous prime is 1155263. The next prime is 1155293. The reversal of 1155276 is 6725511.

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

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, 1771 + ... + 2333.

It is an arithmetic number, because the mean of its divisors is an integer number (65800).

2^1155276 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 1155276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579200).

1155276 is an abundant number, since it is smaller than the sum of its proper divisors (2003124).

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

1155276 is a wasteful number, since it uses less digits than its factorization.

1155276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595 (or 587 counting only the distinct ones).

The product of its digits is 2100, while the sum is 27.

The square root of 1155276 is about 1074.8376621611. The cubic root of 1155276 is about 104.9289315005.

It can be divided in two parts, 11552 and 76, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1155276 in words is "one million, one hundred fifty-five thousand, two hundred seventy-six".