2215289880 has 96 divisors (see below), whose sum is σ = 7274030400. Its totient is φ = 584644608.

The previous prime is 2215289849. The next prime is 2215289887. The reversal of 2215289880 is 889825122.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215289887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3201 + ... + 66639.

It is an arithmetic number, because the mean of its divisors is an integer number (75771150).

Almost surely, 2^2215289880 is an apocalyptic number.

2215289880 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 2215289880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3637015200).

2215289880 is an abundant number, since it is smaller than the sum of its proper divisors (5058740520).

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

2215289880 is a wasteful number, since it uses less digits than its factorization.

2215289880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63553 (or 63546 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 2215289880 is about 47066.8660524578. The cubic root of 2215289880 is about 1303.5975067901.

The spelling of 2215289880 in words is "two billion, two hundred fifteen million, two hundred eighty-nine thousand, eight hundred eighty".