247146 has 16 divisors (see below), whose sum is σ = 523584. Its totient is φ = 77504.

The previous prime is 247141. The next prime is 247183. The reversal of 247146 is 641742.

It is a super-2 number, since 2×247146² = 122162290632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247146.

It is not an unprimeable number, because it can be changed into a prime (247141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1110 + ... + 1313.

It is an arithmetic number, because the mean of its divisors is an integer number (32724).

2²⁴⁷¹⁴⁶ is an apocalyptic number.

247146 is an abundant number, since it is smaller than the sum of its proper divisors (276438).

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

247146 is a wasteful number, since it uses less digits than its factorization.

247146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its digits is 1344, while the sum is 24.

The square root of 247146 is about 497.1378078561. The cubic root of 247146 is about 62.7554134682.

Adding to 247146 its reverse (641742), we get a palindrome (888888).

It can be divided in two parts, 247 and 146, that added together give a palindrome (393).

The spelling of 247146 in words is "two hundred forty-seven thousand, one hundred forty-six".