12203730 has 128 divisors (see below), whose sum is σ = 40642560. Its totient is φ = 2531520.

The previous prime is 12203699. The next prime is 12203753. The reversal of 12203730 is 3730221.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20497 + ... + 21083.

It is an arithmetic number, because the mean of its divisors is an integer number (317520).

Almost surely, 2^12203730 is an apocalyptic number.

12203730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12203730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20321280).

12203730 is an abundant number, since it is smaller than the sum of its proper divisors (28438830).

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

12203730 is a wasteful number, since it uses less digits than its factorization.

12203730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 12203730 is about 3493.3837464556. The cubic root of 12203730 is about 230.2312104690.

Adding to 12203730 its reverse (3730221), we get a palindrome (15933951).

It can be divided in two parts, 1220 and 3730, that added together give a triangular number (4950 = T₉₉).

The spelling of 12203730 in words is "twelve million, two hundred three thousand, seven hundred thirty".