252720036 has 36 divisors (see below), whose sum is σ = 660851100. Its totient is φ = 81334848.

The previous prime is 252719993. The next prime is 252720037. The reversal of 252720036 is 630027252.

It can be written as a sum of positive squares in 2 ways, for example, as 189612900 + 63107136 = 13770^2 + 7944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 252719991 and 252720009.

It is not an unprimeable number, because it can be changed into a prime (252720037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 119991 + ... + 122078.

It is an arithmetic number, because the mean of its divisors is an integer number (18356975).

Almost surely, 2^252720036 is an apocalyptic number.

It is an amenable number.

252720036 is an abundant number, since it is smaller than the sum of its proper divisors (408131064).

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

252720036 is a wasteful number, since it uses less digits than its factorization.

252720036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242108 (or 242103 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 252720036 is about 15897.1706916671. The cubic root of 252720036 is about 632.2369758385.

Adding to 252720036 its reverse (630027252), we get a palindrome (882747288).

The spelling of 252720036 in words is "two hundred fifty-two million, seven hundred twenty thousand, thirty-six".