252332240 has 20 divisors (see below), whose sum is σ = 586672644. Its totient is φ = 100932864.

The previous prime is 252332233. The next prime is 252332257. The reversal of 252332240 is 42233252.

It can be written as a sum of positive squares in 2 ways, for example, as 32581264 + 219750976 = 5708^2 + 14824^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 1576997 + ... + 1577156.

Almost surely, 2^252332240 is an apocalyptic number.

252332240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252332240 is an abundant number, since it is smaller than the sum of its proper divisors (334340404).

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

252332240 is a wasteful number, since it uses less digits than its factorization.

252332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154166 (or 3154160 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 252332240 is about 15884.9689958778. The cubic root of 252332240 is about 631.9134234875.

Adding to 252332240 its reverse (42233252), we get a palindrome (294565492).

The spelling of 252332240 in words is "two hundred fifty-two million, three hundred thirty-two thousand, two hundred forty".