1287850488 has 16 divisors (see below), whose sum is σ = 3219626280. Its totient is φ = 429283488.

The previous prime is 1287850481. The next prime is 1287850507. The reversal of 1287850488 is 8840587821.

It is a self number, because there is not a number n which added to its sum of digits gives 1287850488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287850481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26830195 + ... + 26830242.

Almost surely, 2^1287850488 is an apocalyptic number.

It is an amenable number.

1287850488 is an abundant number, since it is smaller than the sum of its proper divisors (1931775792).

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

1287850488 is a wasteful number, since it uses less digits than its factorization.

1287850488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53660446 (or 53660442 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The square root of 1287850488 is about 35886.6338348974. The cubic root of 1287850488 is about 1087.9822638941.

The spelling of 1287850488 in words is "one billion, two hundred eighty-seven million, eight hundred fifty thousand, four hundred eighty-eight".