1265984 has 28 divisors (see below), whose sum is σ = 2548128. Its totient is φ = 624000.

The previous prime is 1265981. The next prime is 1265987. The reversal of 1265984 is 4895621.

It is an interprime number because it is at equal distance from previous prime (1265981) and next prime (1265987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265981) 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 3 ways as a sum of consecutive naturals, for example, 8309 + ... + 8459.

2^1265984 is an apocalyptic number.

It is an amenable number.

1265984 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1265984 is a wasteful number, since it uses less digits than its factorization.

1265984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 284 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 1265984 is about 1125.1595442425. The cubic root of 1265984 is about 108.1789443142.

The spelling of 1265984 in words is "one million, two hundred sixty-five thousand, nine hundred eighty-four".