247800056 has 96 divisors (see below), whose sum is σ = 564450480. Its totient is φ = 101606400.

The previous prime is 247800031. The next prime is 247800067. The reversal of 247800056 is 650008742.

It is a super-2 number, since 2×247800056² = 122809735507206272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247799995 and 247800031.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1028096 + ... + 1028336.

Almost surely, 2^247800056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247800056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282225240).

247800056 is an abundant number, since it is smaller than the sum of its proper divisors (316650424).

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

247800056 is a wasteful number, since it uses less digits than its factorization.

247800056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 247800056 is about 15741.6662396330. Note that the first 3 decimals coincide. The cubic root of 247800056 is about 628.1072409391.

Adding to 247800056 its reverse (650008742), we get a palindrome (897808798).

The spelling of 247800056 in words is "two hundred forty-seven million, eight hundred thousand, fifty-six".