2012440340 has 24 divisors (see below), whose sum is σ = 4258390752. Its totient is φ = 798830240.

The previous prime is 2012440337. The next prime is 2012440357. The reversal of 2012440340 is 430442102.

It is a super-2 number, since 2×2012440340² = 8099832244118631200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381434 + ... + 386673.

It is an arithmetic number, because the mean of its divisors is an integer number (177432948).

Almost surely, 2^2012440340 is an apocalyptic number.

2012440340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012440340 is an abundant number, since it is smaller than the sum of its proper divisors (2245950412).

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

2012440340 is a wasteful number, since it uses less digits than its factorization.

2012440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768247 (or 768245 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2012440340 is about 44860.2311630246. The cubic root of 2012440340 is about 1262.5279599075.

Adding to 2012440340 its reverse (430442102), we get a palindrome (2442882442).

The spelling of 2012440340 in words is "two billion, twelve million, four hundred forty thousand, three hundred forty".