247266 has 32 divisors (see below), whose sum is σ = 580800. Its totient is φ = 77760.

The previous prime is 247259. The next prime is 247279. The reversal of 247266 is 662742.

It is a super-2 number, since 2×247266² = 122280949512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

247266 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 15 ways as a sum of consecutive naturals, for example, 906 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (18150).

2²⁴⁷²⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290400).

247266 is an abundant number, since it is smaller than the sum of its proper divisors (333534).

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

247266 is a wasteful number, since it uses less digits than its factorization.

247266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 265 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 247266 is about 497.2584840905. The cubic root of 247266 is about 62.7655686411.

The spelling of 247266 in words is "two hundred forty-seven thousand, two hundred sixty-six".