12030352440 has 32 divisors (see below), whose sum is σ = 36091057680. Its totient is φ = 3208093952.

The previous prime is 12030352387. The next prime is 12030352459. The reversal of 12030352440 is 4425303021.

It is a super-2 number, since 2×12030352440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12030352440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50126349 + ... + 50126588.

Almost surely, 2^12030352440 is an apocalyptic number.

12030352440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12030352440 is an abundant number, since it is smaller than the sum of its proper divisors (24060705240).

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

12030352440 is a wasteful number, since it uses less digits than its factorization.

12030352440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100252951 (or 100252947 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 12030352440 its reverse (4425303021), we get a palindrome (16455655461).

The spelling of 12030352440 in words is "twelve billion, thirty million, three hundred fifty-two thousand, four hundred forty".