1285706896 has 40 divisors (see below), whose sum is σ = 2706771200. Its totient is φ = 589368960.

The previous prime is 1285706869. The next prime is 1285706911. The reversal of 1285706896 is 6986075821.

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 in 7 ways as a sum of consecutive naturals, for example, 58791 + ... + 77638.

It is an arithmetic number, because the mean of its divisors is an integer number (67669280).

Almost surely, 2^1285706896 is an apocalyptic number.

1285706896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1285706896 is an abundant number, since it is smaller than the sum of its proper divisors (1421064304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285706896 is a wasteful number, since it uses less digits than its factorization.

1285706896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136487 (or 136481 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 1285706896 is about 35856.7552352412. The cubic root of 1285706896 is about 1087.3782897392.

The spelling of 1285706896 in words is "one billion, two hundred eighty-five million, seven hundred six thousand, eight hundred ninety-six".