1303830 has 64 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 315360.

The previous prime is 1303823. The next prime is 1303831. The reversal of 1303830 is 383031.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303831) 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 31 ways as a sum of consecutive naturals, for example, 2751 + ... + 3189.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2^1303830 is an apocalyptic number.

1303830 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 1303830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1900800).

1303830 is an abundant number, since it is smaller than the sum of its proper divisors (2497770).

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

1303830 is a wasteful number, since it uses less digits than its factorization.

1303830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1303830 is about 1141.8537559600. The cubic root of 1303830 is about 109.2463635994.

Adding to 1303830 its reverse (383031), we get a palindrome (1686861).

The spelling of 1303830 in words is "one million, three hundred three thousand, eight hundred thirty".