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250480 = 24531101
BaseRepresentation
bin111101001001110000
3110201121001
4331021300
531003410
65211344
72062156
oct751160
9421531
10250480
1116120a
12100b54
138a019
14673d6
154e33a
hex3d270

250480 has 40 divisors (see below), whose sum is σ = 607104. Its totient is φ = 96000.

The previous prime is 250451. The next prime is 250489. The reversal of 250480 is 84052.

It is a happy number.

250480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Smith number, since the sum of its digits (19) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2430 + ... + 2530.

2250480 is an apocalyptic number.

250480 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 250480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303552).

250480 is an abundant number, since it is smaller than the sum of its proper divisors (356624).

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

250480 is a wasteful number, since it uses less digits than its factorization.

250480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 139 counting only the distinct ones).

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

The square root of 250480 is about 500.4797698209. The cubic root of 250480 is about 63.0363441926.

The spelling of 250480 in words is "two hundred fifty thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 31 40 62 80 101 124 155 202 248 310 404 496 505 620 808 1010 1240 1616 2020 2480 3131 4040 6262 8080 12524 15655 25048 31310 50096 62620 125240 250480