248720019 has 4 divisors (see below), whose sum is σ = 331626696. Its totient is φ = 165813344.

The previous prime is 248720011. The next prime is 248720033. The reversal of 248720019 is 910027842.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 248720019 - 2³ = 248720011 is a prime.

It is a super-2 number, since 2×248720019² = 123723295702720722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (248720011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41453334 + ... + 41453339.

It is an arithmetic number, because the mean of its divisors is an integer number (82906674).

Almost surely, 2^248720019 is an apocalyptic number.

248720019 is a deficient number, since it is larger than the sum of its proper divisors (82906677).

248720019 is an equidigital number, since it uses as much as digits as its factorization.

248720019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82906676.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 248720019 is about 15770.8598053499. The cubic root of 248720019 is about 628.8835682017.

The spelling of 248720019 in words is "two hundred forty-eight million, seven hundred twenty thousand, nineteen".