12149568 has 112 divisors (see below), whose sum is σ = 36576000. Its totient is φ = 3953664.

The previous prime is 12149567. The next prime is 12149587. The reversal of 12149568 is 86594121.

It is a super-2 number, since 2×12149568² = 295224005173248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136468 + ... + 136556.

Almost surely, 2^12149568 is an apocalyptic number.

12149568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12149568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18288000).

12149568 is an abundant number, since it is smaller than the sum of its proper divisors (24426432).

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

12149568 is an equidigital number, since it uses as much as digits as its factorization.

12149568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 173 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 12149568 is about 3485.6230433023. The cubic root of 12149568 is about 229.8901050300.

The spelling of 12149568 in words is "twelve million, one hundred forty-nine thousand, five hundred sixty-eight".