247980 has 24 divisors (see below), whose sum is σ = 694512. Its totient is φ = 66112.

The previous prime is 247957. The next prime is 247991. The reversal of 247980 is 89742.

247980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247980² = 122988160800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (28938).

2²⁴⁷⁹⁸⁰ is an apocalyptic number.

247980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247980 is an abundant number, since it is smaller than the sum of its proper divisors (446532).

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

247980 is a wasteful number, since it uses less digits than its factorization.

247980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4145 (or 4143 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 247980 is about 497.9759030315. The cubic root of 247980 is about 62.8259240881.

The spelling of 247980 in words is "two hundred forty-seven thousand, nine hundred eighty".