1288787232 has 24 divisors (see below), whose sum is σ = 3383066736. Its totient is φ = 429595712.

The previous prime is 1288787183. The next prime is 1288787239. The reversal of 1288787232 is 2327878821.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1288787239) 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, 6712338 + ... + 6712529.

It is an arithmetic number, because the mean of its divisors is an integer number (140961114).

Almost surely, 2^1288787232 is an apocalyptic number.

1288787232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1288787232 is an abundant number, since it is smaller than the sum of its proper divisors (2094279504).

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

1288787232 is a wasteful number, since it uses less digits than its factorization.

1288787232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13424880 (or 13424872 counting only the distinct ones).

The product of its digits is 602112, while the sum is 48.

The square root of 1288787232 is about 35899.6828955354. The cubic root of 1288787232 is about 1088.2459885694.

The spelling of 1288787232 in words is "one billion, two hundred eighty-eight million, seven hundred eighty-seven thousand, two hundred thirty-two".