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530667381 = 3358349369
BaseRepresentation
bin11111101000010…
…101011101110101
31100222112200210110
4133220111131311
52041322324011
6124354013233
716102412136
oct3750253565
91328480713
10530667381
11252603292
12129877219
1385c31a8a
1450699c8d
15318c4ba6
hex1fa15775

530667381 has 8 divisors (see below), whose sum is σ = 707768320. Its totient is φ = 353672352.

The previous prime is 530667353. The next prime is 530667407. The reversal of 530667381 is 183766035.

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

It is not a de Polignac number, because 530667381 - 25 = 530667349 is a prime.

It is a super-2 number, since 2×5306673812 = 563215738514798322, 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 (530667301) 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, 13936 + ... + 35433.

It is an arithmetic number, because the mean of its divisors is an integer number (88471040).

Almost surely, 2530667381 is an apocalyptic number.

It is an amenable number.

530667381 is a deficient number, since it is larger than the sum of its proper divisors (177100939).

530667381 is a wasteful number, since it uses less digits than its factorization.

530667381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52955.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 530667381 is about 23036.2188954698. The cubic root of 530667381 is about 809.6067699590.

The spelling of 530667381 in words is "five hundred thirty million, six hundred sixty-seven thousand, three hundred eighty-one".

Divisors: 1 3 3583 10749 49369 148107 176889127 530667381