220044402 has 48 divisors (see below), whose sum is σ = 506577240. Its totient is φ = 68898816.

The previous prime is 220044389. The next prime is 220044437. The reversal of 220044402 is 204440022.

220044402 is a `hidden beast` number, since 220 + 0 + 4 + 440 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 219899241 + 145161 = 14829^2 + 381^2 .

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

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, 13618 + ... + 25010.

Almost surely, 2^220044402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220044402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253288620).

220044402 is an abundant number, since it is smaller than the sum of its proper divisors (286532838).

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

220044402 is a wasteful number, since it uses less digits than its factorization.

220044402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11467 (or 11464 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 220044402 is about 14833.8936897903. The cubic root of 220044402 is about 603.7216840494.

Adding to 220044402 its reverse (204440022), we get a palindrome (424484424).

The spelling of 220044402 in words is "two hundred twenty million, forty-four thousand, four hundred two".