1283992 has 8 divisors (see below), whose sum is σ = 2407500. Its totient is φ = 641992.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1283992 is 2993821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80242 + ... + 80257.

2^1283992 is an apocalyptic number.

It is an amenable number.

1283992 is a deficient number, since it is larger than the sum of its proper divisors (1123508).

1283992 is a wasteful number, since it uses less digits than its factorization.

1283992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160505 (or 160501 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 1283992 is about 1133.1337079092. The cubic root of 1283992 is about 108.6894620568.

The spelling of 1283992 in words is "one million, two hundred eighty-three thousand, nine hundred ninety-two".