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250240 = 2751723
BaseRepresentation
bin111101000110000000
3110201021011
4331012000
531001430
65210304
72061364
oct750600
9421234
10250240
11161011
12100994
1389b93
14672a4
154e22a
hex3d180

250240 has 64 divisors (see below), whose sum is σ = 660960. Its totient is φ = 90112.

The previous prime is 250199. The next prime is 250253. The reversal of 250240 is 42052.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 250240.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10869 + ... + 10891.

2250240 is an apocalyptic number.

250240 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 250240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330480).

250240 is an abundant number, since it is smaller than the sum of its proper divisors (410720).

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

250240 is a wasteful number, since it uses less digits than its factorization.

250240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 47 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 250240 is about 500.2399424276. The cubic root of 250240 is about 63.0162047842.

Adding to 250240 its reverse (42052), we get a palindrome (292292).

The spelling of 250240 in words is "two hundred fifty thousand, two hundred forty".

Divisors: 1 2 4 5 8 10 16 17 20 23 32 34 40 46 64 68 80 85 92 115 128 136 160 170 184 230 272 320 340 368 391 460 544 640 680 736 782 920 1088 1360 1472 1564 1840 1955 2176 2720 2944 3128 3680 3910 5440 6256 7360 7820 10880 12512 14720 15640 25024 31280 50048 62560 125120 250240