2217270720 has 112 divisors (see below), whose sum is σ = 8045549568. Its totient is φ = 506803200.

The previous prime is 2217270709. The next prime is 2217270739. The reversal of 2217270720 is 270727122.

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 (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158256 + ... + 171695.

It is an arithmetic number, because the mean of its divisors is an integer number (71835264).

Almost surely, 2^2217270720 is an apocalyptic number.

2217270720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217270720 is an abundant number, since it is smaller than the sum of its proper divisors (5828278848).

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

2217270720 is a wasteful number, since it uses less digits than its factorization.

2217270720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329978 (or 329968 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 2217270720 is about 47087.9041793113. The cubic root of 2217270720 is about 1303.9859358389.

Adding to 2217270720 its reverse (270727122), we get a palindrome (2487997842).

The spelling of 2217270720 in words is "two billion, two hundred seventeen million, two hundred seventy thousand, seven hundred twenty".