1123830 has 24 divisors (see below), whose sum is σ = 2922192. Its totient is φ = 299664.

The previous prime is 1123807. The next prime is 1123841. The reversal of 1123830 is 383211.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6154 + ... + 6333.

It is an arithmetic number, because the mean of its divisors is an integer number (121758).

2^1123830 is an apocalyptic number.

1123830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123830 is an abundant number, since it is smaller than the sum of its proper divisors (1798362).

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

1123830 is a wasteful number, since it uses less digits than its factorization.

1123830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500 (or 12497 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1123830 is about 1060.1084850146. The cubic root of 1123830 is about 103.9681238601.

It can be divided in two parts, 1123 and 830, that added together give a triangular number (1953 = T₆₂).

The spelling of 1123830 in words is "one million, one hundred twenty-three thousand, eight hundred thirty".