1287828238 has 8 divisors (see below), whose sum is σ = 1968190488. Its totient is φ = 631764744.

The previous prime is 1287828229. The next prime is 1287828271. The reversal of 1287828238 is 8328287821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1287828191 and 1287828200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6074556 + ... + 6074767.

It is an arithmetic number, because the mean of its divisors is an integer number (246023811).

Almost surely, 2^1287828238 is an apocalyptic number.

1287828238 is a deficient number, since it is larger than the sum of its proper divisors (680362250).

1287828238 is a wasteful number, since it uses less digits than its factorization.

1287828238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12149378.

The product of its digits is 688128, while the sum is 49.

The square root of 1287828238 is about 35886.3238295594. The cubic root of 1287828238 is about 1087.9759982225.

The spelling of 1287828238 in words is "one billion, two hundred eighty-seven million, eight hundred twenty-eight thousand, two hundred thirty-eight".