12023452240 has 80 divisors (see below), whose sum is σ = 28273690368. Its totient is φ = 4754792448.

The previous prime is 12023452219. The next prime is 12023452261. The reversal of 12023452240 is 4225432021.

It is an interprime number because it is at equal distance from previous prime (12023452219) and next prime (12023452261).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12023452240² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2576149 + ... + 2580811.

Almost surely, 2^12023452240 is an apocalyptic number.

12023452240 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 12023452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14136845184).

12023452240 is an abundant number, since it is smaller than the sum of its proper divisors (16250238128).

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

12023452240 is a wasteful number, since it uses less digits than its factorization.

12023452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036 (or 5030 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12023452240 its reverse (4225432021), we get a palindrome (16248884261).

The spelling of 12023452240 in words is "twelve billion, twenty-three million, four hundred fifty-two thousand, two hundred forty".