1285436 has 6 divisors (see below), whose sum is σ = 2249520. Its totient is φ = 642716.

The previous prime is 1285429. The next prime is 1285441. The reversal of 1285436 is 6345821.

It is a junction number, because it is equal to n+sod(n) for n = 1285399 and 1285408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160676 + ... + 160683.

It is an arithmetic number, because the mean of its divisors is an integer number (374920).

2^1285436 is an apocalyptic number.

It is an amenable number.

1285436 is a deficient number, since it is larger than the sum of its proper divisors (964084).

1285436 is a wasteful number, since it uses less digits than its factorization.

1285436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321363 (or 321361 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 1285436 is about 1133.7706999213. The cubic root of 1285436 is about 108.7301914862.

The spelling of 1285436 in words is "one million, two hundred eighty-five thousand, four hundred thirty-six".