247802 has 8 divisors (see below), whose sum is σ = 387936. Its totient is φ = 118492.

The previous prime is 247799. The next prime is 247811. The reversal of 247802 is 208742.

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

It is a super-2 number, since 2×247802² = 122811662408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648 + ... + 2739.

It is an arithmetic number, because the mean of its divisors is an integer number (48492).

2²⁴⁷⁸⁰² is an apocalyptic number.

247802 is a deficient number, since it is larger than the sum of its proper divisors (140134).

247802 is a wasteful number, since it uses less digits than its factorization.

247802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 247802 is about 497.7971474406. The cubic root of 247802 is about 62.8108883442.

Subtracting from 247802 its reverse (208742), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 247802 in words is "two hundred forty-seven thousand, eight hundred two".