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512715380 = 225191349251
BaseRepresentation
bin11110100011110…
…110101001110100
31022201202122021112
4132203312221310
52022223343010
6122513134152
715464003012
oct3643665164
91281678245
10512715380
11243461721
1212385a358
13822b78a8
144c1458b2
153002aa05
hex1e8f6a74

512715380 has 24 divisors (see below), whose sum is σ = 1133371680. Its totient is φ = 194292000.

The previous prime is 512715367. The next prime is 512715397. The reversal of 512715380 is 83517215.

It is a super-3 number, since 3×5127153803 (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674246 + ... + 675005.

It is an arithmetic number, because the mean of its divisors is an integer number (47223820).

Almost surely, 2512715380 is an apocalyptic number.

It is an amenable number.

512715380 is an abundant number, since it is smaller than the sum of its proper divisors (620656300).

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

512715380 is a wasteful number, since it uses less digits than its factorization.

512715380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349279 (or 1349277 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 512715380 is about 22643.2192940845. The cubic root of 512715380 is about 800.3724203519.

The spelling of 512715380 in words is "five hundred twelve million, seven hundred fifteen thousand, three hundred eighty".

Divisors: 1 2 4 5 10 19 20 38 76 95 190 380 1349251 2698502 5397004 6746255 13492510 25635769 26985020 51271538 102543076 128178845 256357690 512715380