2220404 has 12 divisors (see below), whose sum is σ = 4114404. Its totient is φ = 1044864.

The previous prime is 2220403. The next prime is 2220409. The reversal of 2220404 is 4040222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 902500 = 1148^2 + 950^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16259 + ... + 16394.

It is an arithmetic number, because the mean of its divisors is an integer number (342867).

2^2220404 is an apocalyptic number.

It is an amenable number.

2220404 is a deficient number, since it is larger than the sum of its proper divisors (1894000).

2220404 is a wasteful number, since it uses less digits than its factorization.

2220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32674 (or 32672 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 2220404 is about 1490.1020099309. The cubic root of 2220404 is about 130.4599878311.

Adding to 2220404 its reverse (4040222), we get a palindrome (6260626).

The spelling of 2220404 in words is "two million, two hundred twenty thousand, four hundred four".