1285316 has 6 divisors (see below), whose sum is σ = 2249310. Its totient is φ = 642656.

The previous prime is 1285301. The next prime is 1285351. The reversal of 1285316 is 6135821.

It can be written as a sum of positive squares in only one way, i.e., 1201216 + 84100 = 1096^2 + 290^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160661 + ... + 160668.

It is an arithmetic number, because the mean of its divisors is an integer number (374885).

2^1285316 is an apocalyptic number.

It is an amenable number.

1285316 is a deficient number, since it is larger than the sum of its proper divisors (963994).

1285316 is a wasteful number, since it uses less digits than its factorization.

1285316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321333 (or 321331 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 1285316 is about 1133.7177779324. The cubic root of 1285316 is about 108.7268079315.

The spelling of 1285316 in words is "one million, two hundred eighty-five thousand, three hundred sixteen".