2012451840 has 528 divisors, whose sum is σ = 8461020672. Its totient is φ = 431751168.

The previous prime is 2012451829. The next prime is 2012451841. The reversal of 2012451840 is 481542102.

2012451840 is a `hidden beast` number, since 20 + 124 + 518 + 4 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012451841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5483337 + ... + 5483703.

Almost surely, 2^2012451840 is an apocalyptic number.

2012451840 is a gapful number since it is divisible by the number (20) 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 2012451840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4230510336).

2012451840 is an abundant number, since it is smaller than the sum of its proper divisors (6448568832).

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

2012451840 is a wasteful number, since it uses less digits than its factorization.

2012451840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 2012451840 is about 44860.3593387302. The cubic root of 2012451840 is about 1262.5303647894.

Adding to 2012451840 its reverse (481542102), we get a palindrome (2493993942).

The spelling of 2012451840 in words is "two billion, twelve million, four hundred fifty-one thousand, eight hundred forty".