247712130 has 24 divisors (see below), whose sum is σ = 644051772. Its totient is φ = 66056544.

The previous prime is 247712107. The next prime is 247712131. The reversal of 247712130 is 31217742.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 233264529 + 14447601 = 15273^2 + 3801^2 .

It is a super-2 number, since 2×247712130² = 122722598698273800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247712094 and 247712103.

It is not an unprimeable number, because it can be changed into a prime (247712131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1376089 + ... + 1376268.

Almost surely, 2^247712130 is an apocalyptic number.

247712130 is an abundant number, since it is smaller than the sum of its proper divisors (396339642).

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

247712130 is a wasteful number, since it uses less digits than its factorization.

247712130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752370 (or 2752367 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 247712130 is about 15738.8732125270. The cubic root of 247712130 is about 628.0329424752.

Adding to 247712130 its reverse (31217742), we get a palindrome (278929872).

The spelling of 247712130 in words is "two hundred forty-seven million, seven hundred twelve thousand, one hundred thirty".