2211027840 has 448 divisors, whose sum is σ = 9070500960. Its totient is φ = 504631296.

The previous prime is 2211027839. The next prime is 2211027851. The reversal of 2211027840 is 487201122.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 3265582 + ... + 3266258.

Almost surely, 2^2211027840 is an apocalyptic number.

2211027840 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 2211027840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4535250480).

2211027840 is an abundant number, since it is smaller than the sum of its proper divisors (6859473120).

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

2211027840 is an frugal number, since it uses more digits than its factorization.

2211027840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 2211027840 is about 47021.5678173325. The cubic root of 2211027840 is about 1302.7609644079.

Adding to 2211027840 its reverse (487201122), we get a palindrome (2698228962).

The spelling of 2211027840 in words is "two billion, two hundred eleven million, twenty-seven thousand, eight hundred forty".