252144444 has 24 divisors (see below), whose sum is σ = 608625360. Its totient is φ = 81149824.

The previous prime is 252144443. The next prime is 252144461. The reversal of 252144444 is 444441252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252144443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361929 + ... + 362624.

It is an arithmetic number, because the mean of its divisors is an integer number (25359390).

Almost surely, 2^252144444 is an apocalyptic number.

It is an amenable number.

252144444 is an abundant number, since it is smaller than the sum of its proper divisors (356480916).

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

252144444 is a wasteful number, since it uses less digits than its factorization.

252144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724589 (or 724587 counting only the distinct ones).

The product of its digits is 20480, while the sum is 30.

The square root of 252144444 is about 15879.0567729951. The cubic root of 252144444 is about 631.7566192871.

Adding to 252144444 its reverse (444441252), we get a palindrome (696585696).

The spelling of 252144444 in words is "two hundred fifty-two million, one hundred forty-four thousand, four hundred forty-four".