1287600252 has 24 divisors (see below), whose sum is σ = 3101317632. Its totient is φ = 415354800.

The previous prime is 1287600239. The next prime is 1287600253. The reversal of 1287600252 is 2520067821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287600253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1730274 + ... + 1731017.

It is an arithmetic number, because the mean of its divisors is an integer number (129221568).

Almost surely, 2^1287600252 is an apocalyptic number.

1287600252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1287600252 is an abundant number, since it is smaller than the sum of its proper divisors (1813717380).

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

1287600252 is a wasteful number, since it uses less digits than its factorization.

1287600252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461329 (or 3461327 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 1287600252 is about 35883.1471863882. The cubic root of 1287600252 is about 1087.9117924723.

The spelling of 1287600252 in words is "one billion, two hundred eighty-seven million, six hundred thousand, two hundred fifty-two".