2215485440 has 112 divisors (see below), whose sum is σ = 6077175552. Its totient is φ = 759496704.

The previous prime is 2215485427. The next prime is 2215485451. The reversal of 2215485440 is 445845122.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2215485440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282857 + ... + 290583.

It is an arithmetic number, because the mean of its divisors is an integer number (54260496).

Almost surely, 2^2215485440 is an apocalyptic number.

2215485440 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 2215485440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3038587776).

2215485440 is an abundant number, since it is smaller than the sum of its proper divisors (3861690112).

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

2215485440 is an frugal number, since it uses more digits than its factorization.

2215485440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765 (or 7741 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 35.

The square root of 2215485440 is about 47068.9434765642. The cubic root of 2215485440 is about 1303.6358650549.

The spelling of 2215485440 in words is "two billion, two hundred fifteen million, four hundred eighty-five thousand, four hundred forty".