2217071280 has 80 divisors (see below), whose sum is σ = 6880925664. Its totient is φ = 590530560.

The previous prime is 2217071279. The next prime is 2217071287. The reversal of 2217071280 is 821707122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2217071287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220932 + ... + 230748.

Almost surely, 2^2217071280 is an apocalyptic number.

2217071280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217071280 is an abundant number, since it is smaller than the sum of its proper divisors (4663854384).

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

2217071280 is a wasteful number, since it uses less digits than its factorization.

2217071280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774 (or 10768 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 2217071280 is about 47085.7863903747. The cubic root of 2217071280 is about 1303.9468375080.

The spelling of 2217071280 in words is "two billion, two hundred seventeen million, seventy-one thousand, two hundred eighty".