12888385 has 8 divisors (see below), whose sum is σ = 15719976. Its totient is φ = 10141440.

The previous prime is 12888371. The next prime is 12888427. The reversal of 12888385 is 58388821.

It can be written as a sum of positive squares in 4 ways, for example, as 14641 + 12873744 = 121^2 + 3588^2 .

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

It is not a de Polignac number, because 12888385 - 2⁹ = 12887873 is a prime.

It is a super-2 number, since 2×12888385² = 332220935816450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20824 + ... + 21433.

It is an arithmetic number, because the mean of its divisors is an integer number (1964997).

Almost surely, 2^12888385 is an apocalyptic number.

It is an amenable number.

12888385 is a deficient number, since it is larger than the sum of its proper divisors (2831591).

12888385 is an equidigital number, since it uses as much as digits as its factorization.

12888385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42323.

The product of its digits is 122880, while the sum is 43.

The square root of 12888385 is about 3590.0396933739. The cubic root of 12888385 is about 234.4585997474.

The spelling of 12888385 in words is "twelve million, eight hundred eighty-eight thousand, three hundred eighty-five".