2106903840 has 192 divisors, whose sum is σ = 7254696960. Its totient is φ = 511672320.

The previous prime is 2106903829. The next prime is 2106903889. The reversal of 2106903840 is 483096012.

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, 248796 + ... + 257124.

It is an arithmetic number, because the mean of its divisors is an integer number (37784880).

Almost surely, 2^2106903840 is an apocalyptic number.

2106903840 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 2106903840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3627348480).

2106903840 is an abundant number, since it is smaller than the sum of its proper divisors (5147793120).

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

2106903840 is a wasteful number, since it uses less digits than its factorization.

2106903840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395 (or 8387 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2106903840 is about 45901.0222108397. The cubic root of 2106903840 is about 1281.9809495945.

Adding to 2106903840 its reverse (483096012), we get a palindrome (2589999852).

The spelling of 2106903840 in words is "two billion, one hundred six million, nine hundred three thousand, eight hundred forty".