It is a happy number.
It is a zygodrome in base 2.
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 247320.
It is an unprimeable number.
247320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2247320 is an apocalyptic number.
247320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 247320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
247320 is a wasteful number, since it uses less digits than its factorization.
247320 is an evil number, because the sum of its binary digits is even.
The square root of 247320 is about 497.3127788425. The cubic root of 247320 is about 62.7701373971.
The spelling of 247320 in words is "two hundred forty-seven thousand, three hundred twenty", and thus it is an iban number.