247117152 has 48 divisors (see below), whose sum is σ = 676892160. Its totient is φ = 78790272.

The previous prime is 247117141. The next prime is 247117159. The reversal of 247117152 is 251711742.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×247117152² = 122133773625182208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247117159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53752 + ... + 58167.

It is an arithmetic number, because the mean of its divisors is an integer number (14101920).

Almost surely, 2^247117152 is an apocalyptic number.

It is an amenable number.

247117152 is an abundant number, since it is smaller than the sum of its proper divisors (429775008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247117152 is a wasteful number, since it uses less digits than its factorization.

247117152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111955 (or 111947 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 247117152 is about 15719.9603052934. The cubic root of 247117152 is about 627.5297167453.

Adding to 247117152 its reverse (251711742), we get a palindrome (498828894).

The spelling of 247117152 in words is "two hundred forty-seven million, one hundred seventeen thousand, one hundred fifty-two".