1288274115 has 32 divisors (see below), whose sum is σ = 2094854400. Its totient is φ = 675964544.

The previous prime is 1288274107. The next prime is 1288274123. The reversal of 1288274115 is 5114728821.

It is an interprime number because it is at equal distance from previous prime (1288274107) and next prime (1288274123).

It is a cyclic number.

It is not a de Polignac number, because 1288274115 - 2³ = 1288274107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236452 + ... + 241838.

It is an arithmetic number, because the mean of its divisors is an integer number (65464200).

Almost surely, 2^1288274115 is an apocalyptic number.

1288274115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1288274115 is a deficient number, since it is larger than the sum of its proper divisors (806580285).

1288274115 is a wasteful number, since it uses less digits than its factorization.

1288274115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651.

The product of its digits is 35840, while the sum is 39.

The square root of 1288274115 is about 35892.5356446156. The cubic root of 1288274115 is about 1088.1015448562.

The spelling of 1288274115 in words is "one billion, two hundred eighty-eight million, two hundred seventy-four thousand, one hundred fifteen".