252237240 has 160 divisors (see below), whose sum is σ = 855866880. Its totient is φ = 66624768.

The previous prime is 252237233. The next prime is 252237241. The reversal of 252237240 is 42732252.

252237240 is a `hidden beast` number, since 252 + 2 + 372 + 40 = 666.

252237240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252237241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 411174 + ... + 411786.

It is an arithmetic number, because the mean of its divisors is an integer number (5349168).

Almost surely, 2^252237240 is an apocalyptic number.

252237240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252237240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427933440).

252237240 is an abundant number, since it is smaller than the sum of its proper divisors (603629640).

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

252237240 is a wasteful number, since it uses less digits than its factorization.

252237240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 252237240 is about 15881.9784661735. The cubic root of 252237240 is about 631.8341109767.

Adding to 252237240 its reverse (42732252), we get a palindrome (294969492).

The spelling of 252237240 in words is "two hundred fifty-two million, two hundred thirty-seven thousand, two hundred forty".