1285206976 has 28 divisors (see below), whose sum is σ = 2551587480. Its totient is φ = 642287360.

The previous prime is 1285206973. The next prime is 1285206991. The reversal of 1285206976 is 6796025821.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285206973) 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, 179595 + ... + 186613.

Almost surely, 2^1285206976 is an apocalyptic number.

1285206976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1285206976 is a deficient number, since it is larger than the sum of its proper divisors (1266380504).

1285206976 is an equidigital number, since it uses as much as digits as its factorization.

1285206976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9892 (or 9882 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1285206976 is about 35849.7834860965. The cubic root of 1285206976 is about 1087.2373367668.

The spelling of 1285206976 in words is "one billion, two hundred eighty-five million, two hundred six thousand, nine hundred seventy-six".