1285682672 has 10 divisors (see below), whose sum is σ = 2491010208. Its totient is φ = 642841328.

The previous prime is 1285682669. The next prime is 1285682689. The reversal of 1285682672 is 2762865821.

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, 40177568 + ... + 40177599.

Almost surely, 2^1285682672 is an apocalyptic number.

It is an amenable number.

1285682672 is a deficient number, since it is larger than the sum of its proper divisors (1205327536).

1285682672 is an equidigital number, since it uses as much as digits as its factorization.

1285682672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80355175 (or 80355169 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 1285682672 is about 35856.4174451380. The cubic root of 1285682672 is about 1087.3714605992.

The spelling of 1285682672 in words is "one billion, two hundred eighty-five million, six hundred eighty-two thousand, six hundred seventy-two".