252229740 has 96 divisors (see below), whose sum is σ = 829000704. Its totient is φ = 56090880.

The previous prime is 252229729. The next prime is 252229771. The reversal of 252229740 is 47922252.

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 31 ways as a sum of consecutive naturals, for example, 7425 + ... + 23655.

It is an arithmetic number, because the mean of its divisors is an integer number (8635424).

Almost surely, 2^252229740 is an apocalyptic number.

252229740 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 252229740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414500352).

252229740 is an abundant number, since it is smaller than the sum of its proper divisors (576770964).

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

252229740 is a wasteful number, since it uses less digits than its factorization.

252229740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16287 (or 16285 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 252229740 is about 15881.7423477401. The cubic root of 252229740 is about 631.8278486146.

The spelling of 252229740 in words is "two hundred fifty-two million, two hundred twenty-nine thousand, seven hundred forty".