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250224013 = 1361973253
BaseRepresentation
bin11101110101000…
…01110110001101
3122102211200211001
432322201312031
51003024132023
640455100301
76125604034
oct1672416615
9572750731
10250224013
11119277006
126b971691
133cac0660
142533771b
1516e7a6ad
hexeea1d8d

250224013 has 16 divisors (see below), whose sum is σ = 276798256. Its totient is φ = 224778240.

The previous prime is 250224011. The next prime is 250224031. The reversal of 250224013 is 310422052.

It can be written as a sum of positive squares in 8 ways, for example, as 6770404 + 243453609 = 2602^2 + 15603^2 .

It is a cyclic number.

It is not a de Polignac number, because 250224013 - 21 = 250224011 is a prime.

It is a super-2 number, since 2×2502240132 = 125224113363648338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250224011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75295 + ... + 78547.

It is an arithmetic number, because the mean of its divisors is an integer number (17299891).

Almost surely, 2250224013 is an apocalyptic number.

It is an amenable number.

250224013 is a deficient number, since it is larger than the sum of its proper divisors (26574243).

250224013 is a wasteful number, since it uses less digits than its factorization.

250224013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3424.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 250224013 is about 15818.4706277187. The cubic root of 250224013 is about 630.1486279047.

Adding to 250224013 its reverse (310422052), we get a palindrome (560646065).

The spelling of 250224013 in words is "two hundred fifty million, two hundred twenty-four thousand, thirteen".

Divisors: 1 13 61 97 793 1261 3253 5917 42289 76921 198433 315541 2579629 4102033 19248001 250224013