247488340 has 48 divisors (see below), whose sum is σ = 569923200. Its totient is φ = 89527680.

The previous prime is 247488337. The next prime is 247488343. The reversal of 247488340 is 43884742.

247488340 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (247488337) and next prime (247488343).

It is a super-2 number, since 2×247488340² = 122500956871911200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247488293 and 247488302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247488343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40954 + ... + 46606.

It is an arithmetic number, because the mean of its divisors is an integer number (11873400).

Almost surely, 2^247488340 is an apocalyptic number.

247488340 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 247488340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284961600).

247488340 is an abundant number, since it is smaller than the sum of its proper divisors (322434860).

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

247488340 is a wasteful number, since it uses less digits than its factorization.

247488340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872 (or 5870 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 247488340 is about 15731.7621390612. The cubic root of 247488340 is about 627.8437580399.

The spelling of 247488340 in words is "two hundred forty-seven million, four hundred eighty-eight thousand, three hundred forty".