247300385 has 8 divisors (see below), whose sum is σ = 302360040. Its totient is φ = 194107264.

The previous prime is 247300379. The next prime is 247300457. The reversal of 247300385 is 583003742.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3066001 + 244234384 = 1751^2 + 15628^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 247300385 - 2¹⁰ = 247299361 is a prime.

It is a super-2 number, since 2×247300385² = 122314960842296450, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 466340 + ... + 466869.

It is an arithmetic number, because the mean of its divisors is an integer number (37795005).

Almost surely, 2^247300385 is an apocalyptic number.

It is an amenable number.

247300385 is a deficient number, since it is larger than the sum of its proper divisors (55059655).

247300385 is an equidigital number, since it uses as much as digits as its factorization.

247300385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933267.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 247300385 is about 15725.7872616922. The cubic root of 247300385 is about 627.6847791570.

The spelling of 247300385 in words is "two hundred forty-seven million, three hundred thousand, three hundred eighty-five".