247242315 has 8 divisors (see below), whose sum is σ = 395587728. Its totient is φ = 131862560.

The previous prime is 247242301. The next prime is 247242319. The reversal of 247242315 is 513242742.

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

It is not a de Polignac number, because 247242315 - 2⁵ = 247242283 is a prime.

It is a super-2 number, since 2×247242315² = 122257524653118450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247242319) 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 7 ways as a sum of consecutive naturals, for example, 8241396 + ... + 8241425.

It is an arithmetic number, because the mean of its divisors is an integer number (49448466).

Almost surely, 2^247242315 is an apocalyptic number.

247242315 is a deficient number, since it is larger than the sum of its proper divisors (148345413).

247242315 is a wasteful number, since it uses less digits than its factorization.

247242315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16482829.

The product of its digits is 13440, while the sum is 30.

The square root of 247242315 is about 15723.9408228345. The cubic root of 247242315 is about 627.6356452418.

The spelling of 247242315 in words is "two hundred forty-seven million, two hundred forty-two thousand, three hundred fifteen".