1285733 has 4 divisors (see below), whose sum is σ = 1293600. Its totient is φ = 1277868.

The previous prime is 1285717. The next prime is 1285741. The reversal of 1285733 is 3375821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1285733 - 2⁴ = 1285717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1285696 and 1285705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3683 + ... + 4016.

It is an arithmetic number, because the mean of its divisors is an integer number (323400).

2^1285733 is an apocalyptic number.

It is an amenable number.

1285733 is a deficient number, since it is larger than the sum of its proper divisors (7867).

1285733 is an equidigital number, since it uses as much as digits as its factorization.

1285733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7866.

The product of its digits is 5040, while the sum is 29.

The square root of 1285733 is about 1133.9016712220. The cubic root of 1285733 is about 108.7385648786.

The spelling of 1285733 in words is "one million, two hundred eighty-five thousand, seven hundred thirty-three".