247084885 has 24 divisors (see below), whose sum is σ = 318275496. Its totient is φ = 184089600.

The previous prime is 247084879. The next prime is 247084889. The reversal of 247084885 is 588480742.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 1034289 + 246050596 = 1017^2 + 15686^2 .

It is not a de Polignac number, because 247084885 - 2¹⁷ = 246953813 is a prime.

It is a super-2 number, since 2×247084885² = 122101880790926450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247084889) 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, 145099 + ... + 146791.

It is an arithmetic number, because the mean of its divisors is an integer number (13261479).

Almost surely, 2^247084885 is an apocalyptic number.

It is an amenable number.

247084885 is a deficient number, since it is larger than the sum of its proper divisors (71190611).

247084885 is a wasteful number, since it uses less digits than its factorization.

247084885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 1816 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 46.

The square root of 247084885 is about 15718.9339651263. The cubic root of 247084885 is about 627.5024025982.

The spelling of 247084885 in words is "two hundred forty-seven million, eighty-four thousand, eight hundred eighty-five".