1129830 has 32 divisors (see below), whose sum is σ = 2921184. Its totient is φ = 278016.

The previous prime is 1129819. The next prime is 1129831. The reversal of 1129830 is 389211.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1059 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (91287).

2^1129830 is an apocalyptic number.

1129830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129830 is an abundant number, since it is smaller than the sum of its proper divisors (1791354).

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

1129830 is a wasteful number, since it uses less digits than its factorization.

1129830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1129830 is about 1062.9346169920. The cubic root of 1129830 is about 104.1528202040.

The spelling of 1129830 in words is "one million, one hundred twenty-nine thousand, eight hundred thirty".