2012535440 has 20 divisors (see below), whose sum is σ = 4679145084. Its totient is φ = 805014144.

The previous prime is 2012535439. The next prime is 2012535479. The reversal of 2012535440 is 445352102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1037097616 + 975437824 = 32204^2 + 31232^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12578267 + ... + 12578426.

Almost surely, 2^2012535440 is an apocalyptic number.

2012535440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012535440 is an abundant number, since it is smaller than the sum of its proper divisors (2666609644).

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

2012535440 is a wasteful number, since it uses less digits than its factorization.

2012535440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25156706 (or 25156700 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2012535440 is about 44861.2911093740. The cubic root of 2012535440 is about 1262.5478469596.

Adding to 2012535440 its reverse (445352102), we get a palindrome (2457887542).

The spelling of 2012535440 in words is "two billion, twelve million, five hundred thirty-five thousand, four hundred forty".