2012635620 has 48 divisors (see below), whose sum is σ = 6261534720. Its totient is φ = 536702688.

The previous prime is 2012635613. The next prime is 2012635633. The reversal of 2012635620 is 265362102.

2012635620 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 6 + 35 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 1863012 + ... + 1864091.

It is an arithmetic number, because the mean of its divisors is an integer number (130448640).

Almost surely, 2^2012635620 is an apocalyptic number.

2012635620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012635620 is an abundant number, since it is smaller than the sum of its proper divisors (4248899100).

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

2012635620 is a wasteful number, since it uses less digits than its factorization.

2012635620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727121 (or 3727113 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2012635620 is about 44862.4076482750. The cubic root of 2012635620 is about 1262.5687956499.

Adding to 2012635620 its reverse (265362102), we get a palindrome (2277997722).

The spelling of 2012635620 in words is "two billion, twelve million, six hundred thirty-five thousand, six hundred twenty".