1287268293 has 16 divisors (see below), whose sum is σ = 1750346496. Its totient is φ = 841214400.

The previous prime is 1287268249. The next prime is 1287268337. The reversal of 1287268293 is 3928627821.

1287268293 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1287268249) and next prime (1287268337).

It is not a de Polignac number, because 1287268293 - 2⁹ = 1287267781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287268223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207943 + ... + 214043.

It is an arithmetic number, because the mean of its divisors is an integer number (109396656).

Almost surely, 2^1287268293 is an apocalyptic number.

It is an amenable number.

1287268293 is a deficient number, since it is larger than the sum of its proper divisors (463078203).

1287268293 is a wasteful number, since it uses less digits than its factorization.

1287268293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484.

The product of its digits is 580608, while the sum is 48.

The square root of 1287268293 is about 35878.5213324072. The cubic root of 1287268293 is about 1087.8182921409.

The spelling of 1287268293 in words is "one billion, two hundred eighty-seven million, two hundred sixty-eight thousand, two hundred ninety-three".