1287113552 has 20 divisors (see below), whose sum is σ = 2574228096. Its totient is φ = 622796640.

The previous prime is 1287113519. The next prime is 1287113563. The reversal of 1287113552 is 2553117821.

1287113552 is an admirable number.

It is a super-2 number, since 2×1287113552² = 3313322591484113408, which contains 22 as substring.

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, 1296998 + ... + 1297989.

Almost surely, 2^1287113552 is an apocalyptic number.

It is an amenable number.

1287113552 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1287113552 is a wasteful number, since it uses less digits than its factorization.

1287113552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2595026 (or 2595020 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 1287113552 is about 35876.3648102759. The cubic root of 1287113552 is about 1087.7747019438.

The spelling of 1287113552 in words is "one billion, two hundred eighty-seven million, one hundred thirteen thousand, five hundred fifty-two".