12270600 has 144 divisors (see below), whose sum is σ = 43741620. Its totient is φ = 3072000.

The previous prime is 12270593. The next prime is 12270607. The reversal of 12270600 is 607221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12270593) and next prime (12270607).

It can be written as a sum of positive squares in 6 ways, for example, as 10074276 + 2196324 = 3174^2 + 1482^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12270607) 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 35 ways as a sum of consecutive naturals, for example, 30400 + ... + 30800.

Almost surely, 2^12270600 is an apocalyptic number.

12270600 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 12270600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21870810).

12270600 is an abundant number, since it is smaller than the sum of its proper divisors (31471020).

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

12270600 is a wasteful number, since it uses less digits than its factorization.

12270600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12270600 is about 3502.9416209809. The cubic root of 12270600 is about 230.6509599085.

Adding to 12270600 its reverse (607221), we get a palindrome (12877821).

The spelling of 12270600 in words is "twelve million, two hundred seventy thousand, six hundred".