2215001440 has 96 divisors (see below), whose sum is σ = 5516138880. Its totient is φ = 839215104.

The previous prime is 2215001419. The next prime is 2215001443. The reversal of 2215001440 is 441005122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215001443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241417 + ... + 250423.

It is an arithmetic number, because the mean of its divisors is an integer number (57459780).

Almost surely, 2^2215001440 is an apocalyptic number.

2215001440 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 2215001440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2758069440).

2215001440 is an abundant number, since it is smaller than the sum of its proper divisors (3301137440).

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

2215001440 is a wasteful number, since it uses less digits than its factorization.

2215001440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104 (or 9096 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2215001440 is about 47063.8018013845. The cubic root of 2215001440 is about 1303.5409263867.

Adding to 2215001440 its reverse (441005122), we get a palindrome (2656006562).

The spelling of 2215001440 in words is "two billion, two hundred fifteen million, one thousand, four hundred forty".