12231072 has 72 divisors (see below), whose sum is σ = 39757536. Its totient is φ = 3494016.

The previous prime is 12231061. The next prime is 12231073. The reversal of 12231072 is 27013221.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is not an unprimeable number, because it can be changed into a prime (12231073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1018 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (552188).

Almost surely, 2^12231072 is an apocalyptic number.

12231072 is a gapful number since it is divisible by the number (12) 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 12231072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19878768).

12231072 is an abundant number, since it is smaller than the sum of its proper divisors (27526464).

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

12231072 is a wasteful number, since it uses less digits than its factorization.

12231072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6090 (or 6079 counting only the distinct ones).

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

The square root of 12231072 is about 3497.2949546757. The cubic root of 12231072 is about 230.4030236872.

Adding to 12231072 its reverse (27013221), we get a palindrome (39244293).

The spelling of 12231072 in words is "twelve million, two hundred thirty-one thousand, seventy-two".