247243073 has 24 divisors (see below), whose sum is σ = 323898624. Its totient is φ = 186429600.

The previous prime is 247243033. The next prime is 247243103. The reversal of 247243073 is 370342742.

It is not a de Polignac number, because 247243073 - 2¹² = 247238977 is a prime.

It is a super-2 number, since 2×247243073² = 122258274292966658, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247243033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9311 + ... + 24107.

It is an arithmetic number, because the mean of its divisors is an integer number (13495776).

Almost surely, 2^247243073 is an apocalyptic number.

It is an amenable number.

247243073 is a deficient number, since it is larger than the sum of its proper divisors (76655551).

247243073 is a wasteful number, since it uses less digits than its factorization.

247243073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14853 (or 14846 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 247243073 is about 15723.9649261883. The cubic root of 247243073 is about 627.6362866467.

The spelling of 247243073 in words is "two hundred forty-seven million, two hundred forty-three thousand, seventy-three".