20353444 has 12 divisors (see below), whose sum is σ = 36376704. Its totient is φ = 9960104.

The previous prime is 20353429. The next prime is 20353483. The reversal of 20353444 is 44435302.

It is a super-2 number, since 2×20353444² = 828525365322272, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 53944 + ... + 54319.

It is an arithmetic number, because the mean of its divisors is an integer number (3031392).

Almost surely, 2^20353444 is an apocalyptic number.

It is an amenable number.

20353444 is a deficient number, since it is larger than the sum of its proper divisors (16023260).

20353444 is a wasteful number, since it uses less digits than its factorization.

20353444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108314 (or 108312 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 20353444 is about 4511.4791366025. The cubic root of 20353444 is about 273.0314248645.

Adding to 20353444 its reverse (44435302), we get a palindrome (64788746).

The spelling of 20353444 in words is "twenty million, three hundred fifty-three thousand, four hundred forty-four".