1153992 has 32 divisors (see below), whose sum is σ = 3297600. Its totient is φ = 329664.

The previous prime is 1153973. The next prime is 1154017. The reversal of 1153992 is 2993511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3267 + ... + 3602.

It is an arithmetic number, because the mean of its divisors is an integer number (103050).

2^1153992 is an apocalyptic number.

1153992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1153992 is an abundant number, since it is smaller than the sum of its proper divisors (2143608).

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

1153992 is a wasteful number, since it uses less digits than its factorization.

1153992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885 (or 6881 counting only the distinct ones).

The product of its digits is 2430, while the sum is 30.

The square root of 1153992 is about 1074.2401966041. The cubic root of 1153992 is about 104.8900436236.

It can be divided in two parts, 1153 and 992, that added together give a triangular number (2145 = T₆₅).

The spelling of 1153992 in words is "one million, one hundred fifty-three thousand, nine hundred ninety-two".