252749092 has 24 divisors (see below), whose sum is σ = 455196672. Its totient is φ = 122721600.

The previous prime is 252749089. The next prime is 252749099. The reversal of 252749092 is 290947252.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (252749099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33117 + ... + 40027.

It is an arithmetic number, because the mean of its divisors is an integer number (18966528).

Almost surely, 2^252749092 is an apocalyptic number.

It is an amenable number.

252749092 is a deficient number, since it is larger than the sum of its proper divisors (202447580).

252749092 is a wasteful number, since it uses less digits than its factorization.

252749092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7179 (or 7177 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 252749092 is about 15898.0845387109. The cubic root of 252749092 is about 632.2612049867.

The spelling of 252749092 in words is "two hundred fifty-two million, seven hundred forty-nine thousand, ninety-two".