2213223840 has 72 divisors (see below), whose sum is σ = 7552631268. Its totient is φ = 590192640.

The previous prime is 2213223809. The next prime is 2213223853. The reversal of 2213223840 is 483223122.

It can be written as a sum of positive squares in 2 ways, for example, as 1856920464 + 356303376 = 43092^2 + 18876^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 767041 + ... + 769920.

Almost surely, 2^2213223840 is an apocalyptic number.

2213223840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2213223840 is an abundant number, since it is smaller than the sum of its proper divisors (5339407428).

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

2213223840 is a wasteful number, since it uses less digits than its factorization.

2213223840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536982 (or 1536971 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2213223840 is about 47044.9130087409. The cubic root of 2213223840 is about 1303.1921238305.

Adding to 2213223840 its reverse (483223122), we get a palindrome (2696446962).

The spelling of 2213223840 in words is "two billion, two hundred thirteen million, two hundred twenty-three thousand, eight hundred forty".