2220723 has 16 divisors (see below), whose sum is σ = 3313440. Its totient is φ = 1469952.

The previous prime is 2220697. The next prime is 2220731. The reversal of 2220723 is 3270222.

2220723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2220723 - 2⁸ = 2220467 is a prime.

It is a super-2 number, since 2×2220723² = 9863221285458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2220696 and 2220705.

It is not an unprimeable number, because it can be changed into a prime (2220773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6115 + ... + 6467.

It is an arithmetic number, because the mean of its divisors is an integer number (207090).

2^2220723 is an apocalyptic number.

2220723 is a deficient number, since it is larger than the sum of its proper divisors (1092717).

2220723 is a wasteful number, since it uses less digits than its factorization.

2220723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 2220723 is about 1490.2090457382. The cubic root of 2220723 is about 130.4662351542.

Adding to 2220723 its reverse (3270222), we get a palindrome (5490945).

The spelling of 2220723 in words is "two million, two hundred twenty thousand, seven hundred twenty-three".