1320930 has 48 divisors (see below), whose sum is σ = 3701880. Its totient is φ = 324864.

The previous prime is 1320929. The next prime is 1320931. The reversal of 1320930 is 390231.

1320930 is nontrivially palindromic in base 14.

It is an interprime number because it is at equal distance from previous prime (1320929) and next prime (1320931).

It can be written as a sum of positive squares in 4 ways, for example, as 505521 + 815409 = 711^2 + 903^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1320931) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 606 + ... + 1734.

2^1320930 is an apocalyptic number.

1320930 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 1320930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850940).

1320930 is an abundant number, since it is smaller than the sum of its proper divisors (2380950).

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

1320930 is a wasteful number, since it uses less digits than its factorization.

1320930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155 (or 1152 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 1320930 is about 1149.3171885950. The cubic root of 1320930 is about 109.7218869710.

The spelling of 1320930 in words is "one million, three hundred twenty thousand, nine hundred thirty".