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247044 = 223717173
BaseRepresentation
bin111100010100000100
3110112212210
4330110010
530401134
65143420
72046150
oct742404
9415783
10247044
11159676
12bab70
13885a5
1466060
154d2e9
hex3c504

247044 has 48 divisors (see below), whose sum is σ = 701568. Its totient is φ = 66048.

The previous prime is 247031. The next prime is 247067. The reversal of 247044 is 440742.

It is a super-2 number, since 2×2470442 = 122061475872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 247044.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342 + ... + 1514.

It is an arithmetic number, because the mean of its divisors is an integer number (14616).

2247044 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 247044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350784).

247044 is an abundant number, since it is smaller than the sum of its proper divisors (454524).

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

247044 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 247044 = (742404)8.

247044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 247044 is about 497.0352100204. The cubic root of 247044 is about 62.7467789863.

Adding to 247044 its reverse (440742), we get a palindrome (687786).

The spelling of 247044 in words is "two hundred forty-seven thousand, forty-four", and thus it is an iban number.