2108641280 has 104 divisors (see below), whose sum is σ = 5327426400. Its totient is φ = 798916608.

The previous prime is 2108641279. The next prime is 2108641289. The reversal of 2108641280 is 821468012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2108641289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386411 + ... + 391829.

Almost surely, 2^2108641280 is an apocalyptic number.

2108641280 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 2108641280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2663713200).

2108641280 is an abundant number, since it is smaller than the sum of its proper divisors (3218785120).

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

2108641280 is an equidigital number, since it uses as much as digits as its factorization.

2108641280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467 (or 5445 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 2108641280 is about 45919.9442508372. The cubic root of 2108641280 is about 1282.3332442682. Note that the first 3 decimals are identical.

The spelling of 2108641280 in words is "two billion, one hundred eight million, six hundred forty-one thousand, two hundred eighty".