247930073 has 4 divisors (see below), whose sum is σ = 248554980. Its totient is φ = 247305168.

The previous prime is 247930061. The next prime is 247930093. The reversal of 247930073 is 370039742.

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

It can be written as a sum of positive squares in 2 ways, for example, as 130142464 + 117787609 = 11408^2 + 10853^2 .

It is a cyclic number.

It is not a de Polignac number, because 247930073 - 2⁸ = 247929817 is a prime.

It is a super-2 number, since 2×247930073² = 122938642195570658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247930013) 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, 311858 + ... + 312651.

It is an arithmetic number, because the mean of its divisors is an integer number (62138745).

Almost surely, 2^247930073 is an apocalyptic number.

It is an amenable number.

247930073 is a deficient number, since it is larger than the sum of its proper divisors (624907).

247930073 is an equidigital number, since it uses as much as digits as its factorization.

247930073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624906.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 247930073 is about 15745.7954070285. The cubic root of 247930073 is about 628.2170745712.

The spelling of 247930073 in words is "two hundred forty-seven million, nine hundred thirty thousand, seventy-three".