2217343820 has 24 divisors (see below), whose sum is σ = 4806630528. Its totient is φ = 858326400.

The previous prime is 2217343781. The next prime is 2217343831. The reversal of 2217343820 is 283437122.

It is a super-2 number, since 2×2217343820² = 9833227232184384800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787561 + ... + 1788800.

It is an arithmetic number, because the mean of its divisors is an integer number (200276272).

Almost surely, 2^2217343820 is an apocalyptic number.

2217343820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217343820 is an abundant number, since it is smaller than the sum of its proper divisors (2589286708).

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

2217343820 is a wasteful number, since it uses less digits than its factorization.

2217343820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3576401 (or 3576399 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 2217343820 is about 47088.6803807454. The cubic root of 2217343820 is about 1304.0002658173. Note that the first 3 decimals are identical.

The spelling of 2217343820 in words is "two billion, two hundred seventeen million, three hundred forty-three thousand, eight hundred twenty".