12158788 has 12 divisors (see below), whose sum is σ = 21309120. Its totient is φ = 6070472.

The previous prime is 12158777. The next prime is 12158813. The reversal of 12158788 is 88785121.

It is a super-2 number, since 2×12158788² = 295672251257888, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12158788.

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, 1545 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (1775760).

Almost surely, 2^12158788 is an apocalyptic number.

It is an amenable number.

12158788 is a deficient number, since it is larger than the sum of its proper divisors (9150332).

12158788 is a wasteful number, since it uses less digits than its factorization.

12158788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4466 (or 4464 counting only the distinct ones).

The product of its digits is 35840, while the sum is 40.

The square root of 12158788 is about 3486.9453680836. The cubic root of 12158788 is about 229.9482429223.

The spelling of 12158788 in words is "twelve million, one hundred fifty-eight thousand, seven hundred eighty-eight".