248540287 has 8 divisors (see below), whose sum is σ = 251893712. Its totient is φ = 245203200.

The previous prime is 248540233. The next prime is 248540329. The reversal of 248540287 is 782045842.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248540287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248540207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28237 + ... + 35977.

It is an arithmetic number, because the mean of its divisors is an integer number (31486714).

Almost surely, 2^248540287 is an apocalyptic number.

248540287 is a deficient number, since it is larger than the sum of its proper divisors (3353425).

248540287 is an equidigital number, since it uses as much as digits as its factorization.

248540287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8169.

The product of its (nonzero) digits is 143360, while the sum is 40.

The square root of 248540287 is about 15765.1605446947. The cubic root of 248540287 is about 628.7320487822.

The spelling of 248540287 in words is "two hundred forty-eight million, five hundred forty thousand, two hundred eighty-seven".