1319280 has 80 divisors (see below), whose sum is σ = 4285440. Its totient is φ = 335104.

The previous prime is 1319273. The next prime is 1319281. The reversal of 1319280 is 829131.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1319280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5401 + ... + 5639.

It is an arithmetic number, because the mean of its divisors is an integer number (53568).

2^1319280 is an apocalyptic number.

1319280 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 1319280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142720).

1319280 is an abundant number, since it is smaller than the sum of its proper divisors (2966160).

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

1319280 is a wasteful number, since it uses less digits than its factorization.

1319280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1319280 is about 1148.5991467871. The cubic root of 1319280 is about 109.6761826701.

The spelling of 1319280 in words is "one million, three hundred nineteen thousand, two hundred eighty".