247289244 has 24 divisors (see below), whose sum is σ = 577264128. Its totient is φ = 82393200.

The previous prime is 247289243. The next prime is 247289249. The reversal of 247289244 is 442982742.

It is a super-2 number, since 2×247289244² = 122303940396183072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247289196 and 247289205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247289243) 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 7 ways as a sum of consecutive naturals, for example, 46069 + ... + 51155.

It is an arithmetic number, because the mean of its divisors is an integer number (24052672).

Almost surely, 2^247289244 is an apocalyptic number.

It is an amenable number.

247289244 is an abundant number, since it is smaller than the sum of its proper divisors (329974884).

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

247289244 is a wasteful number, since it uses less digits than its factorization.

247289244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9145 (or 9143 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 247289244 is about 15725.4330306036. The cubic root of 247289244 is about 627.6753531828.

The spelling of 247289244 in words is "two hundred forty-seven million, two hundred eighty-nine thousand, two hundred forty-four".