2006831840 has 48 divisors (see below), whose sum is σ = 5105848608. Its totient is φ = 740983296.

The previous prime is 2006831839. The next prime is 2006831867. The reversal of 2006831840 is 481386002.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2006831797 and 2006831806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480332 + ... + 484491.

It is an arithmetic number, because the mean of its divisors is an integer number (106371846).

Almost surely, 2^2006831840 is an apocalyptic number.

2006831840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2006831840 is an abundant number, since it is smaller than the sum of its proper divisors (3099016768).

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

2006831840 is a wasteful number, since it uses less digits than its factorization.

2006831840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964851 (or 964843 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 2006831840 is about 44797.6767254732. The cubic root of 2006831840 is about 1261.3540160030.

The spelling of 2006831840 in words is "two billion, six million, eight hundred thirty-one thousand, eight hundred forty".