252203644 has 96 divisors (see below), whose sum is σ = 588349440. Its totient is φ = 91627200.

The previous prime is 252203641. The next prime is 252203647. The reversal of 252203644 is 446302252.

252203644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252203641) and next prime (252203647).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252203641) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 415189 + ... + 415795.

It is an arithmetic number, because the mean of its divisors is an integer number (6128640).

Almost surely, 2^252203644 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 252203644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294174720).

252203644 is an abundant number, since it is smaller than the sum of its proper divisors (336145796).

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

252203644 is a wasteful number, since it uses less digits than its factorization.

252203644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 252203644 is about 15880.9207541628. The cubic root of 252203644 is about 631.8060579669.

Adding to 252203644 its reverse (446302252), we get a palindrome (698505896).

The spelling of 252203644 in words is "two hundred fifty-two million, two hundred three thousand, six hundred forty-four".