1284992 has 16 divisors (see below), whose sum is σ = 2560200. Its totient is φ = 642432.

The previous prime is 1284991. The next prime is 1285021. The reversal of 1284992 is 2994821.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4892 + ... + 5147.

2^1284992 is an apocalyptic number.

It is an amenable number.

1284992 is a deficient number, since it is larger than the sum of its proper divisors (1275208).

1284992 is an equidigital number, since it uses as much as digits as its factorization.

1284992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053 (or 10041 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1284992 is about 1133.5748762212. The cubic root of 1284992 is about 108.7176712818.

The spelling of 1284992 in words is "one million, two hundred eighty-four thousand, nine hundred ninety-two".