2106343872 has 56 divisors (see below), whose sum is σ = 6192266000. Its totient is φ = 702114048.

The previous prime is 2106343859. The next prime is 2106343873. The reversal of 2106343872 is 2783436012.

It is a happy number.

2106343872 is a `hidden beast` number, since 2 + 10 + 634 + 3 + 8 + 7 + 2 = 666.

2106343872 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×2106343872² = 8873369014223904768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106343873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607747 + ... + 611202.

Almost surely, 2^2106343872 is an apocalyptic number.

It is an amenable number.

2106343872 is an abundant number, since it is smaller than the sum of its proper divisors (4085922128).

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

2106343872 is a wasteful number, since it uses less digits than its factorization.

2106343872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218970 (or 1218954 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 2106343872 is about 45894.9220720550. The cubic root of 2106343872 is about 1281.8673655600.

Adding to 2106343872 its reverse (2783436012), we get a palindrome (4889779884).

The spelling of 2106343872 in words is "two billion, one hundred six million, three hundred forty-three thousand, eight hundred seventy-two".