1270320 has 80 divisors (see below), whose sum is σ = 4047360. Its totient is φ = 329472.

The previous prime is 1270319. The next prime is 1270327. The reversal of 1270320 is 230721.

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

It is a super-2 number, since 2×1270320² = 3227425804800, which contains 22 as substring.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1270320.

It is not an unprimeable number, because it can be changed into a prime (1270327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16041 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (50592).

2^1270320 is an apocalyptic number.

1270320 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 1270320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2023680).

1270320 is an abundant number, since it is smaller than the sum of its proper divisors (2777040).

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

1270320 is a wasteful number, since it uses less digits than its factorization.

1270320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 1270320 is about 1127.0847350577. The cubic root of 1270320 is about 108.3023080124.

The spelling of 1270320 in words is "one million, two hundred seventy thousand, three hundred twenty".