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670248 = 233329107
BaseRepresentation
bin10100011101000101000
31021001102000
42203220220
5132421443
622211000
75461035
oct2435050
91231360
10670248
11418627
12283a60
131a60c7
1413638c
15d38d3
hexa3a28

670248 has 64 divisors (see below), whose sum is σ = 1944000. Its totient is φ = 213696.

The previous prime is 670237. The next prime is 670249. The reversal of 670248 is 842076.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670249) by changing a digit.

670248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6211 + ... + 6317.

It is an arithmetic number, because the mean of its divisors is an integer number (30375).

2670248 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 670248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972000).

670248 is an abundant number, since it is smaller than the sum of its proper divisors (1273752).

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

670248 is a wasteful number, since it uses less digits than its factorization.

670248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 670248 is about 818.6867532824. The cubic root of 670248 is about 87.5141963361.

The spelling of 670248 in words is "six hundred seventy thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 27 29 36 54 58 72 87 107 108 116 174 214 216 232 261 321 348 428 522 642 696 783 856 963 1044 1284 1566 1926 2088 2568 2889 3103 3132 3852 5778 6206 6264 7704 9309 11556 12412 18618 23112 24824 27927 37236 55854 74472 83781 111708 167562 223416 335124 670248