1280324 has 6 divisors (see below), whose sum is σ = 2240574. Its totient is φ = 640160.

The previous prime is 1280317. The next prime is 1280333. The reversal of 1280324 is 4230821.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 135424 = 1070^2 + 368^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1280296 and 1280305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160037 + ... + 160044.

It is an arithmetic number, because the mean of its divisors is an integer number (373429).

2^1280324 is an apocalyptic number.

It is an amenable number.

1280324 is a deficient number, since it is larger than the sum of its proper divisors (960250).

1280324 is a wasteful number, since it uses less digits than its factorization.

1280324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320085 (or 320083 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1280324 is about 1131.5140299616. The cubic root of 1280324 is about 108.5858650504.

The spelling of 1280324 in words is "one million, two hundred eighty thousand, three hundred twenty-four".