253422444 has 48 divisors (see below), whose sum is σ = 648700416. Its totient is φ = 76363200.

The previous prime is 253422443. The next prime is 253422461. The reversal of 253422444 is 444224352.

It is not an unprimeable number, because it can be changed into a prime (253422443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18589 + ... + 29195.

It is an arithmetic number, because the mean of its divisors is an integer number (13514592).

Almost surely, 2^253422444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253422444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324350208).

253422444 is an abundant number, since it is smaller than the sum of its proper divisors (395277972).

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

253422444 is a wasteful number, since it uses less digits than its factorization.

253422444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10806 (or 10804 counting only the distinct ones).

The product of its digits is 30720, while the sum is 30.

The square root of 253422444 is about 15919.2475952854. The cubic root of 253422444 is about 632.8221787625.

Adding to 253422444 its reverse (444224352), we get a palindrome (697646796).

The spelling of 253422444 in words is "two hundred fifty-three million, four hundred twenty-two thousand, four hundred forty-four".