12055400 has 96 divisors (see below), whose sum is σ = 32736000. Its totient is φ = 4043520.

The previous prime is 12055391. The next prime is 12055409. The reversal of 12055400 is 455021.

It is an interprime number because it is at equal distance from previous prime (12055391) and next prime (12055409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12055409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110546 + ... + 110654.

It is an arithmetic number, because the mean of its divisors is an integer number (341000).

Almost surely, 2^12055400 is an apocalyptic number.

12055400 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 12055400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16368000).

12055400 is an abundant number, since it is smaller than the sum of its proper divisors (20680600).

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

12055400 is a wasteful number, since it uses less digits than its factorization.

12055400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 12055400 is about 3472.0887085442. The cubic root of 12055400 is about 229.2946253251.

The spelling of 12055400 in words is "twelve million, fifty-five thousand, four hundred".