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245080 = 23511557
BaseRepresentation
bin111011110101011000
3110110012001
4323311120
530320310
65130344
72040343
oct736530
9413161
10245080
11158150
12b99b4
1387724
146545a
154c93a
hex3bd58

245080 has 32 divisors (see below), whose sum is σ = 602640. Its totient is φ = 88960.

The previous prime is 245071. The next prime is 245083. The reversal of 245080 is 80542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245083) by changing a digit.

245080 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162 + ... + 718.

2245080 is an apocalyptic number.

245080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301320).

245080 is an abundant number, since it is smaller than the sum of its proper divisors (357560).

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

245080 is a wasteful number, since it uses less digits than its factorization.

245080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 245080 is about 495.0555524383. The cubic root of 245080 is about 62.5800574092.

The spelling of 245080 in words is "two hundred forty-five thousand, eighty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440 557 1114 2228 2785 4456 5570 6127 11140 12254 22280 24508 30635 49016 61270 122540 245080