248724419 has 4 divisors (see below), whose sum is σ = 248885520. Its totient is φ = 248563320.

The previous prime is 248724401. The next prime is 248724449. The reversal of 248724419 is 914427842.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-248724419 is a prime.

It is a super-2 number, since 2×248724419² = 123727673213775122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (248724449) 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 3 ways as a sum of consecutive naturals, for example, 78212 + ... + 81329.

It is an arithmetic number, because the mean of its divisors is an integer number (62221380).

Almost surely, 2^248724419 is an apocalyptic number.

248724419 is a deficient number, since it is larger than the sum of its proper divisors (161101).

248724419 is a wasteful number, since it uses less digits than its factorization.

248724419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161100.

The product of its digits is 129024, while the sum is 41.

The square root of 248724419 is about 15770.9993025173. Note that the first 3 decimals coincide. The cubic root of 248724419 is about 628.8872766171.

The spelling of 248724419 in words is "two hundred forty-eight million, seven hundred twenty-four thousand, four hundred nineteen".