247480 has 32 divisors (see below), whose sum is σ = 583200. Its totient is φ = 94336.

The previous prime is 247463. The next prime is 247501. The reversal of 247480 is 84742.

It is a super-2 number, since 2×247480² = 122492700800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786 + ... + 1054.

It is an arithmetic number, because the mean of its divisors is an integer number (18225).

2²⁴⁷⁴⁸⁰ is an apocalyptic number.

247480 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 247480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291600).

247480 is an abundant number, since it is smaller than the sum of its proper divisors (335720).

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

247480 is a wasteful number, since it uses less digits than its factorization.

247480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 247480 is about 497.4736173909. The cubic root of 247480 is about 62.7836705484.

It can be divided in two parts, 247 and 480, that added together give a palindrome (727).

The spelling of 247480 in words is "two hundred forty-seven thousand, four hundred eighty".