1286752872 has 32 divisors (see below), whose sum is σ = 3225175200. Its totient is φ = 427811904.

The previous prime is 1286752853. The next prime is 1286752877. The reversal of 1286752872 is 2782576821.

It is not an unprimeable number, because it can be changed into a prime (1286752877) 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, 59578 + ... + 78249.

It is an arithmetic number, because the mean of its divisors is an integer number (100786725).

Almost surely, 2^1286752872 is an apocalyptic number.

1286752872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1286752872 is an abundant number, since it is smaller than the sum of its proper divisors (1938422328).

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

1286752872 is a wasteful number, since it uses less digits than its factorization.

1286752872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138225 (or 138221 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The square root of 1286752872 is about 35871.3377503544. The cubic root of 1286752872 is about 1087.6730856225.

The spelling of 1286752872 in words is "one billion, two hundred eighty-six million, seven hundred fifty-two thousand, eight hundred seventy-two".