1155930 has 32 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 302016.

The previous prime is 1155929. The next prime is 1155937. The reversal of 1155930 is 395511.

Added to its reverse (395511) it gives a triangular number (1551441 = T₁₇₆₁).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1155930.

It is not an unprimeable number, because it can be changed into a prime (1155937) 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, 1227 + ... + 1953.

It is an arithmetic number, because the mean of its divisors is an integer number (88452).

2^1155930 is an apocalyptic number.

1155930 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 1155930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415232).

1155930 is an abundant number, since it is smaller than the sum of its proper divisors (1674534).

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

1155930 is a wasteful number, since it uses less digits than its factorization.

1155930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 1155930 is about 1075.1418511062. The cubic root of 1155930 is about 104.9487278020.

Adding to 1155930 its reverse (395511), we get a triangular number (1551441 = T₁₇₆₁).

The spelling of 1155930 in words is "one million, one hundred fifty-five thousand, nine hundred thirty".