252999729 has 24 divisors (see below), whose sum is σ = 393513120. Its totient is φ = 156048768.

The previous prime is 252999727. The next prime is 252999737. The reversal of 252999729 is 927999252.

252999729 is a `hidden beast` number, since 2 + 529 + 9 + 97 + 29 = 666.

It is not a de Polignac number, because 252999729 - 2¹ = 252999727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252999727) 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 23 ways as a sum of consecutive naturals, for example, 4987 + ... + 23040.

It is an arithmetic number, because the mean of its divisors is an integer number (16396380).

Almost surely, 2^252999729 is an apocalyptic number.

It is an amenable number.

252999729 is a deficient number, since it is larger than the sum of its proper divisors (140513391).

252999729 is a wasteful number, since it uses less digits than its factorization.

252999729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28109 (or 28106 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 252999729 is about 15905.9652017726. The cubic root of 252999729 is about 632.4701285189.

The spelling of 252999729 in words is "two hundred fifty-two million, nine hundred ninety-nine thousand, seven hundred twenty-nine".