12163400 has 48 divisors (see below), whose sum is σ = 28772340. Its totient is φ = 4780800.

The previous prime is 12163399. The next prime is 12163409. The reversal of 12163400 is 436121.

It can be written as a sum of positive squares in 6 ways, for example, as 3247204 + 8916196 = 1802^2 + 2986^2 .

It is not an unprimeable number, because it can be changed into a prime (12163409) 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 11 ways as a sum of consecutive naturals, for example, 11702 + ... + 12698.

Almost surely, 2^12163400 is an apocalyptic number.

12163400 is a gapful number since it is divisible by the number (10) 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 12163400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14386170).

12163400 is an abundant number, since it is smaller than the sum of its proper divisors (16608940).

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

12163400 is a wasteful number, since it uses less digits than its factorization.

12163400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 12163400 is about 3487.6066291943. The cubic root of 12163400 is about 229.9773134523.

Adding to 12163400 its reverse (436121), we get a palindrome (12599521).

The spelling of 12163400 in words is "twelve million, one hundred sixty-three thousand, four hundred".