1286401512 has 32 divisors (see below), whose sum is σ = 3508368480. Its totient is φ = 389818560.

The previous prime is 1286401453. The next prime is 1286401537. The reversal of 1286401512 is 2151046821.

It is a super-2 number, since 2×1286401512² = 3309657700151772288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1286401512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2436103 + ... + 2436630.

It is an arithmetic number, because the mean of its divisors is an integer number (109636515).

Almost surely, 2^1286401512 is an apocalyptic number.

1286401512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1286401512 is an abundant number, since it is smaller than the sum of its proper divisors (2221966968).

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

1286401512 is a wasteful number, since it uses less digits than its factorization.

1286401512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4872753 (or 4872749 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1286401512 is about 35866.4399125422. The cubic root of 1286401512 is about 1087.5740768142.

The spelling of 1286401512 in words is "one billion, two hundred eighty-six million, four hundred one thousand, five hundred twelve".