12888530 has 8 divisors (see below), whose sum is σ = 23199372. Its totient is φ = 5155408.

The previous prime is 12888527. The next prime is 12888539. The reversal of 12888530 is 3588821.

It can be written as a sum of positive squares in 2 ways, for example, as 10569001 + 2319529 = 3251^2 + 1523^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12888530² = 332228411121800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12888539) by changing a digit.

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, 644417 + ... + 644436.

Almost surely, 2^12888530 is an apocalyptic number.

12888530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12888530 is a deficient number, since it is larger than the sum of its proper divisors (10310842).

12888530 is a wasteful number, since it uses less digits than its factorization.

12888530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288860.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 12888530 is about 3590.0598880799. The cubic root of 12888530 is about 234.4594789983.

The spelling of 12888530 in words is "twelve million, eight hundred eighty-eight thousand, five hundred thirty".