247487238 has 48 divisors (see below), whose sum is σ = 558654096. Its totient is φ = 82114560.

The previous prime is 247487237. The next prime is 247487239. The reversal of 247487238 is 832784742.

It is an interprime number because it is at equal distance from previous prime (247487237) and next prime (247487239).

It is a super-2 number, since 2×247487238² = 122499865945737288, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 247487193 and 247487202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247487237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116070 + ... + 118182.

It is an arithmetic number, because the mean of its divisors is an integer number (11638627).

Almost surely, 2^247487238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247487238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279327048).

247487238 is an abundant number, since it is smaller than the sum of its proper divisors (311166858).

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

247487238 is a wasteful number, since it uses less digits than its factorization.

247487238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2359 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

The square root of 247487238 is about 15731.7271143381. The cubic root of 247487238 is about 627.8428261646.

The spelling of 247487238 in words is "two hundred forty-seven million, four hundred eighty-seven thousand, two hundred thirty-eight".