247220 has 24 divisors (see below), whose sum is σ = 532224. Its totient is φ = 96416.

The previous prime is 247201. The next prime is 247223. The reversal of 247220 is 22742.

It is a super-2 number, since 2×247220² = 122235456800, which contains 22 as substring.

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 247220.

It is not an unprimeable number, because it can be changed into a prime (247223) 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, 809 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (22176).

2²⁴⁷²²⁰ is an apocalyptic number.

247220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247220 is an abundant number, since it is smaller than the sum of its proper divisors (285004).

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

247220 is a wasteful number, since it uses less digits than its factorization.

247220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 247220 is about 497.2122283291. The cubic root of 247220 is about 62.7616762133.

Adding to 247220 its reverse (22742), we get a palindrome (269962).

The spelling of 247220 in words is "two hundred forty-seven thousand, two hundred twenty", and thus it is an iban number.