1234320 has 80 divisors (see below), whose sum is σ = 3958080. Its totient is φ = 317952.

The previous prime is 1234309. The next prime is 1234333. The reversal of 1234320 is 234321.

It is a Cunningham number, because it is equal to 1111²-1.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1234320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8811 + ... + 8949.

It is an arithmetic number, because the mean of its divisors is an integer number (49476).

2^1234320 is an apocalyptic number.

1234320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1979040).

1234320 is an abundant number, since it is smaller than the sum of its proper divisors (2723760).

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

1234320 is a wasteful number, since it uses less digits than its factorization.

1234320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1234320 is about 1110.9995499549. Note that the first 3 decimals coincide. The cubic root of 1234320 is about 107.2694174285.

Adding to 1234320 its reverse (234321), we get a palindrome (1468641).

Subtracting from 1234320 its reverse (234321), we obtain a palindrome (999999).

The spelling of 1234320 in words is "one million, two hundred thirty-four thousand, three hundred twenty".