2012885840 has 160 divisors (see below), whose sum is σ = 5783320320. Its totient is φ = 636014592.

The previous prime is 2012885813. The next prime is 2012885851. The reversal of 2012885840 is 485882102.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 2012885794 and 2012885803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391124 + ... + 396236.

It is an arithmetic number, because the mean of its divisors is an integer number (36145752).

Almost surely, 2^2012885840 is an apocalyptic number.

2012885840 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 2012885840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2891660160).

2012885840 is an abundant number, since it is smaller than the sum of its proper divisors (3770434480).

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

2012885840 is a wasteful number, since it uses less digits than its factorization.

2012885840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189 (or 5183 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 2012885840 is about 44865.1963107262. The cubic root of 2012885840 is about 1262.6211162438.

The spelling of 2012885840 in words is "two billion, twelve million, eight hundred eighty-five thousand, eight hundred forty".