1285706396 has 24 divisors (see below), whose sum is σ = 2565596880. Its totient is φ = 558496512.

The previous prime is 1285706393. The next prime is 1285706423. The reversal of 1285706396 is 6936075821.

It is a self number, because there is not a number n which added to its sum of digits gives 1285706396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285706393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726326 + ... + 728093.

It is an arithmetic number, because the mean of its divisors is an integer number (106899870).

Almost surely, 2^1285706396 is an apocalyptic number.

It is an amenable number.

1285706396 is a deficient number, since it is larger than the sum of its proper divisors (1279890484).

1285706396 is a wasteful number, since it uses less digits than its factorization.

1285706396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454453 (or 1454451 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1285706396 is about 35856.7482630536. The cubic root of 1285706396 is about 1087.3781487819.

The spelling of 1285706396 in words is "one billion, two hundred eighty-five million, seven hundred six thousand, three hundred ninety-six".