247800238172 has 12 divisors (see below), whose sum is σ = 433656004320. Its totient is φ = 123898522656.

The previous prime is 247800238151. The next prime is 247800238199. The reversal of 247800238172 is 271832008742.

It is a super-2 number, since 2×247800238172² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7073 + ... + 704024.

It is an arithmetic number, because the mean of its divisors is an integer number (36138000360).

Almost surely, 2^247800238172 is an apocalyptic number.

It is an amenable number.

247800238172 is a deficient number, since it is larger than the sum of its proper divisors (185855766148).

247800238172 is a wasteful number, since it uses less digits than its factorization.

247800238172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798220 (or 798218 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The spelling of 247800238172 in words is "two hundred forty-seven billion, eight hundred million, two hundred thirty-eight thousand, one hundred seventy-two".