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250380689 = 13191013687
BaseRepresentation
bin11101110110010…
…00000110010001
3122110010122201212
432323020012101
51003044140224
640502305505
76130125566
oct1673100621
9573118655
10250380689
11119373799
126ba28295
133cb46a70
142537886d
1516eabd0e
hexeec8191

250380689 has 8 divisors (see below), whose sum is σ = 283832640. Its totient is φ = 218956176.

The previous prime is 250380659. The next prime is 250380721. The reversal of 250380689 is 986083052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250380689 - 212 = 250376593 is a prime.

It is a super-2 number, since 2×2503806892 = 125380978848229442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (250380659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 506597 + ... + 507090.

It is an arithmetic number, because the mean of its divisors is an integer number (35479080).

Almost surely, 2250380689 is an apocalyptic number.

It is an amenable number.

250380689 is a deficient number, since it is larger than the sum of its proper divisors (33451951).

250380689 is a wasteful number, since it uses less digits than its factorization.

250380689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013719.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 250380689 is about 15823.4221646267. The cubic root of 250380689 is about 630.2801215028.

The spelling of 250380689 in words is "two hundred fifty million, three hundred eighty thousand, six hundred eighty-nine".

Divisors: 1 13 19 247 1013687 13177931 19260053 250380689