12987332 has 12 divisors (see below), whose sum is σ = 23157036. Its totient is φ = 6371040.

The previous prime is 12987329. The next prime is 12987343. The reversal of 12987332 is 23378921.

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 7150276 = 2416^2 + 2674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12987292 and 12987301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30419 + ... + 30842.

It is an arithmetic number, because the mean of its divisors is an integer number (1929753).

Almost surely, 2^12987332 is an apocalyptic number.

It is an amenable number.

12987332 is a deficient number, since it is larger than the sum of its proper divisors (10169704).

12987332 is a wasteful number, since it uses less digits than its factorization.

12987332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61318 (or 61316 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 12987332 is about 3603.7941117661. The cubic root of 12987332 is about 235.0570677762.

The spelling of 12987332 in words is "twelve million, nine hundred eighty-seven thousand, three hundred thirty-two".