247898 has 8 divisors (see below), whose sum is σ = 424992. Its totient is φ = 106236.

The previous prime is 247889. The next prime is 247901. The reversal of 247898 is 898742.

247898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×247898² = 122906836808, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8840 + ... + 8867.

It is an arithmetic number, because the mean of its divisors is an integer number (53124).

2²⁴⁷⁸⁹⁸ is an apocalyptic number.

247898 is a deficient number, since it is larger than the sum of its proper divisors (177094).

247898 is a wasteful number, since it uses less digits than its factorization.

247898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17716.

The product of its digits is 32256, while the sum is 38.

The square root of 247898 is about 497.8935629228. The cubic root of 247898 is about 62.8189984036.

The spelling of 247898 in words is "two hundred forty-seven thousand, eight hundred ninety-eight".