247880 has 16 divisors (see below), whose sum is σ = 557820. Its totient is φ = 99136.

The previous prime is 247879. The next prime is 247889. The reversal of 247880 is 88742.

It can be written as a sum of positive squares in 2 ways, for example, as 244036 + 3844 = 494^2 + 62^2 .

It is a super-2 number, since 2×247880² = 122888988800, which contains 22 as substring.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (247889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3059 + ... + 3138.

2²⁴⁷⁸⁸⁰ is an apocalyptic number.

247880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247880 is an abundant number, since it is smaller than the sum of its proper divisors (309940).

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

247880 is a wasteful number, since it uses less digits than its factorization.

247880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208 (or 6204 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 247880 is about 497.8754864421. The cubic root of 247880 is about 62.8174779270.

The spelling of 247880 in words is "two hundred forty-seven thousand, eight hundred eighty".