2223023220 has 72 divisors (see below), whose sum is σ = 7356192480. Its totient is φ = 538914240.

The previous prime is 2223023219. The next prime is 2223023251. The reversal of 2223023220 is 223203222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2223023193 and 2223023202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 559390 + ... + 563349.

It is an arithmetic number, because the mean of its divisors is an integer number (102169340).

Almost surely, 2^2223023220 is an apocalyptic number.

2223023220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2223023220 is an abundant number, since it is smaller than the sum of its proper divisors (5133169260).

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

2223023220 is a wasteful number, since it uses less digits than its factorization.

2223023220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122765 (or 1122760 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 2223023220 is about 47148.9471780654. The cubic root of 2223023220 is about 1305.1126515692.

Adding to 2223023220 its reverse (223203222), we get a palindrome (2446226442).

It can be divided in two parts, 222302 and 3220, that added together give a palindrome (225522).

The spelling of 2223023220 in words is "two billion, two hundred twenty-three million, twenty-three thousand, two hundred twenty".