1009830 has 32 divisors (see below), whose sum is σ = 2485728. Its totient is φ = 262400.

The previous prime is 1009819. The next prime is 1009837. The reversal of 1009830 is 389001.

It is a junction number, because it is equal to n+sod(n) for n = 1009797 and 1009806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009837) 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, 820 + ... + 1640.

It is an arithmetic number, because the mean of its divisors is an integer number (77679).

2^1009830 is an apocalyptic number.

1009830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1242864).

1009830 is an abundant number, since it is smaller than the sum of its proper divisors (1475898).

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

1009830 is a wasteful number, since it uses less digits than its factorization.

1009830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1009830 is about 1004.9029803916. The cubic root of 1009830 is about 100.3265988374.

The spelling of 1009830 in words is "one million, nine thousand, eight hundred thirty".