2106773872 has 80 divisors (see below), whose sum is σ = 4971681792. Its totient is φ = 845222400.

The previous prime is 2106773813. The next prime is 2106773873. The reversal of 2106773872 is 2783776012.

It is a super-2 number, since 2×2106773872² = 8876992295483744768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106773873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112372 + ... + 129772.

Almost surely, 2^2106773872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2106773872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2485840896).

2106773872 is an abundant number, since it is smaller than the sum of its proper divisors (2864907920).

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

2106773872 is a wasteful number, since it uses less digits than its factorization.

2106773872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17486 (or 17480 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 2106773872 is about 45899.6064471146. The cubic root of 2106773872 is about 1281.9545886499.

The spelling of 2106773872 in words is "two billion, one hundred six million, seven hundred seventy-three thousand, eight hundred seventy-two".