247872 has 28 divisors (see below), whose sum is σ = 656336. Its totient is φ = 82560.

The previous prime is 247853. The next prime is 247873. The reversal of 247872 is 278742.

It is a super-2 number, since 2×247872² = 122881056768, which contains 22 as substring.

It is a nialpdrome in base 8 and base 12.

It is not an unprimeable number, because it can be changed into a prime (247873) by changing a digit.

247872 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454 + ... + 837.

2²⁴⁷⁸⁷² is an apocalyptic number.

It is an amenable number.

247872 is an abundant number, since it is smaller than the sum of its proper divisors (408464).

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

247872 is a wasteful number, since it uses less digits than its factorization.

247872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 1296 counting only the distinct ones).

The product of its digits is 6272, while the sum is 30.

The square root of 247872 is about 497.8674522401. The cubic root of 247872 is about 62.8168021360.

It can be divided in two parts, 2 and 47872, that added together give a palindrome (47874).

The spelling of 247872 in words is "two hundred forty-seven thousand, eight hundred seventy-two".