247030256 has 40 divisors (see below), whose sum is σ = 527240064. Its totient is φ = 111188160.

The previous prime is 247030219. The next prime is 247030279. The reversal of 247030256 is 652030742.

It is a super-2 number, since 2×247030256² = 122047894758851072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11315 + ... + 24941.

Almost surely, 2^247030256 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 247030256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263620032).

247030256 is an abundant number, since it is smaller than the sum of its proper divisors (280209808).

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

247030256 is a wasteful number, since it uses less digits than its factorization.

247030256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13749 (or 13743 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 247030256 is about 15717.1961876157. The cubic root of 247030256 is about 627.4561535052.

Adding to 247030256 its reverse (652030742), we get a palindrome (899060998).

The spelling of 247030256 in words is "two hundred forty-seven million, thirty thousand, two hundred fifty-six".