247904226 has 48 divisors (see below), whose sum is σ = 568923264. Its totient is φ = 80869104.

The previous prime is 247904177. The next prime is 247904227. The reversal of 247904226 is 622409742.

It is a super-2 number, since 2×247904226² = 122913010537318152, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247904227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17416 + ... + 28268.

It is an arithmetic number, because the mean of its divisors is an integer number (11852568).

Almost surely, 2^247904226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247904226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284461632).

247904226 is an abundant number, since it is smaller than the sum of its proper divisors (321019038).

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

247904226 is a wasteful number, since it uses less digits than its factorization.

247904226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10917 (or 10905 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 247904226 is about 15744.9746268452. The cubic root of 247904226 is about 628.1952430244.

The spelling of 247904226 in words is "two hundred forty-seven million, nine hundred four thousand, two hundred twenty-six".