247212 has 60 divisors (see below), whose sum is σ = 745360. Its totient is φ = 69984.

The previous prime is 247201. The next prime is 247223. The reversal of 247212 is 212742.

It is an interprime number because it is at equal distance from previous prime (247201) and next prime (247223).

It is a super-2 number, since 2×247212² = 122227545888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247212.

It is an unprimeable number.

247212 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 19 ways as a sum of consecutive naturals, for example, 2214 + ... + 2322.

2²⁴⁷²¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (372680).

247212 is an abundant number, since it is smaller than the sum of its proper divisors (498148).

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

247212 is a wasteful number, since it uses less digits than its factorization.

247212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 121 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 247212 is about 497.2041834096. The cubic root of 247212 is about 62.7609992200.

Adding to 247212 its reverse (212742), we get a palindrome (459954).

The spelling of 247212 in words is "two hundred forty-seven thousand, two hundred twelve", and thus it is an iban number.