1155888 has 60 divisors (see below), whose sum is σ = 3385200. Its totient is φ = 367488.

The previous prime is 1155863. The next prime is 1155899. The reversal of 1155888 is 8885511.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3138 + ... + 3486.

It is an arithmetic number, because the mean of its divisors is an integer number (56420).

2^1155888 is an apocalyptic number.

1155888 is a gapful number since it is divisible by the number (18) 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 1155888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692600).

1155888 is an abundant number, since it is smaller than the sum of its proper divisors (2229312).

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

1155888 is a wasteful number, since it uses less digits than its factorization.

1155888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 377 counting only the distinct ones).

The product of its digits is 12800, while the sum is 36.

The square root of 1155888 is about 1075.1223186224. The cubic root of 1155888 is about 104.9474567043.

The spelling of 1155888 in words is "one million, one hundred fifty-five thousand, eight hundred eighty-eight".