252726387 has 12 divisors (see below), whose sum is σ = 348992280. Its totient is φ = 162672832.

The previous prime is 252726377. The next prime is 252726401. The reversal of 252726387 is 783627252.

It is not a de Polignac number, because 252726387 - 2⁴ = 252726371 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (252726367) 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 11 ways as a sum of consecutive naturals, for example, 47562 + ... + 52607.

It is an arithmetic number, because the mean of its divisors is an integer number (29082690).

Almost surely, 2^252726387 is an apocalyptic number.

252726387 is a deficient number, since it is larger than the sum of its proper divisors (96265893).

252726387 is a wasteful number, since it uses less digits than its factorization.

252726387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100230 (or 100201 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 252726387 is about 15897.3704429380. The cubic root of 252726387 is about 632.2422719539.

The spelling of 252726387 in words is "two hundred fifty-two million, seven hundred twenty-six thousand, three hundred eighty-seven".