1309268 has 6 divisors (see below), whose sum is σ = 2291226. Its totient is φ = 654632.

The previous prime is 1309249. The next prime is 1309283. The reversal of 1309268 is 8629031.

It can be written as a sum of positive squares in only one way, i.e., 1214404 + 94864 = 1102^2 + 308^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1309268.

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, 163655 + ... + 163662.

It is an arithmetic number, because the mean of its divisors is an integer number (381871).

2^1309268 is an apocalyptic number.

It is an amenable number.

1309268 is a deficient number, since it is larger than the sum of its proper divisors (981958).

1309268 is a wasteful number, since it uses less digits than its factorization.

1309268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327321 (or 327319 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1309268 is about 1144.2324938578. The cubic root of 1309268 is about 109.3980341147.

The spelling of 1309268 in words is "one million, three hundred nine thousand, two hundred sixty-eight".