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530021429 = 7292610943
BaseRepresentation
bin11111100101110…
…111110000110101
31100221022212201022
4133211313300311
52041141141204
6124332110525
716064051660
oct3745676065
91327285638
10530021429
11252201a43
12129605445
1385a66a62
145056c6d7
15317e85be
hex1f977c35

530021429 has 8 divisors (see below), whose sum is σ = 626626560. Its totient is φ = 438638256.

The previous prime is 530021423. The next prime is 530021431. The reversal of 530021429 is 924120035.

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

It is a de Polignac number, because none of the positive numbers 2k-530021429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 530021398 and 530021407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530021423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1305269 + ... + 1305674.

It is an arithmetic number, because the mean of its divisors is an integer number (78328320).

Almost surely, 2530021429 is an apocalyptic number.

It is an amenable number.

530021429 is a deficient number, since it is larger than the sum of its proper divisors (96605131).

530021429 is a wasteful number, since it uses less digits than its factorization.

530021429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610979.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 530021429 is about 23022.1942698779. The cubic root of 530021429 is about 809.2781400943.

The spelling of 530021429 in words is "five hundred thirty million, twenty-one thousand, four hundred twenty-nine".

Divisors: 1 7 29 203 2610943 18276601 75717347 530021429