1123880 has 16 divisors (see below), whose sum is σ = 2528820. Its totient is φ = 449536.

The previous prime is 1123879. The next prime is 1123883. The reversal of 1123880 is 883211.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 206116 = 958^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (1123883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14009 + ... + 14088.

2^1123880 is an apocalyptic number.

1123880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123880 is an abundant number, since it is smaller than the sum of its proper divisors (1404940).

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

1123880 is a wasteful number, since it uses less digits than its factorization.

1123880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28108 (or 28104 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 1123880 is about 1060.1320672445. The cubic root of 1123880 is about 103.9696657093.

The spelling of 1123880 in words is "one million, one hundred twenty-three thousand, eight hundred eighty".