253020444 has 12 divisors (see below), whose sum is σ = 590381064. Its totient is φ = 84340144.

The previous prime is 253020433. The next prime is 253020451. The reversal of 253020444 is 444020352.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10542507 + ... + 10542530.

It is an arithmetic number, because the mean of its divisors is an integer number (49198422).

Almost surely, 2^253020444 is an apocalyptic number.

It is an amenable number.

253020444 is an abundant number, since it is smaller than the sum of its proper divisors (337360620).

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

253020444 is a wasteful number, since it uses less digits than its factorization.

253020444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21085044 (or 21085042 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 253020444 is about 15906.6163592387. The cubic root of 253020444 is about 632.4873897510.

Adding to 253020444 its reverse (444020352), we get a palindrome (697040796).

The spelling of 253020444 in words is "two hundred fifty-three million, twenty thousand, four hundred forty-four".