1320620 has 24 divisors (see below), whose sum is σ = 3169824. Its totient is φ = 452736.

The previous prime is 1320617. The next prime is 1320623. The reversal of 1320620 is 260231.

It is an interprime number because it is at equal distance from previous prime (1320617) and next prime (1320623).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1320595 and 1320604.

It is not an unprimeable number, because it can be changed into a prime (1320623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4577 + ... + 4856.

It is an arithmetic number, because the mean of its divisors is an integer number (132076).

2^1320620 is an apocalyptic number.

1320620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320620 is an abundant number, since it is smaller than the sum of its proper divisors (1849204).

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

1320620 is a wasteful number, since it uses less digits than its factorization.

1320620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9449 (or 9447 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320620 is about 1149.1823179983. The cubic root of 1320620 is about 109.7133030072.

Adding to 1320620 its reverse (260231), we get a palindrome (1580851).

The spelling of 1320620 in words is "one million, three hundred twenty thousand, six hundred twenty".