1308928 has 18 divisors (see below), whose sum is σ = 2613254. Its totient is φ = 654336.

The previous prime is 1308919. The next prime is 1308943. The reversal of 1308928 is 8298031.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 589824 = 848^2 + 768^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1308928.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2301 + ... + 2812.

2^1308928 is an apocalyptic number.

It is an amenable number.

1308928 is a deficient number, since it is larger than the sum of its proper divisors (1304326).

1308928 is an frugal number, since it uses more digits than its factorization.

1308928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129 (or 5115 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1308928 is about 1144.0839130064. The cubic root of 1308928 is about 109.3885635424.

The spelling of 1308928 in words is "one million, three hundred eight thousand, nine hundred twenty-eight".