1287005232 has 40 divisors (see below), whose sum is σ = 3381122880. Its totient is φ = 421729600.

The previous prime is 1287005219. The next prime is 1287005233. The reversal of 1287005232 is 2325007821.

It is a self number, because there is not a number n which added to its sum of digits gives 1287005232.

It is not an unprimeable number, because it can be changed into a prime (1287005233) 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, 224394 + ... + 230057.

It is an arithmetic number, because the mean of its divisors is an integer number (84528072).

Almost surely, 2^1287005232 is an apocalyptic number.

1287005232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1287005232 is an abundant number, since it is smaller than the sum of its proper divisors (2094117648).

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

1287005232 is a wasteful number, since it uses less digits than its factorization.

1287005232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454521 (or 454515 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1287005232 is about 35874.8551495334. The cubic root of 1287005232 is about 1087.7441863608.

The spelling of 1287005232 in words is "one billion, two hundred eighty-seven million, five thousand, two hundred thirty-two".