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530132981 = 7178235413
BaseRepresentation
bin11111100110010…
…010111111110101
31100221112112201212
4133212102333311
52041203223411
6124334331205
716065025130
oct3746227765
91327475655
10530132981
11252278834
12129659b05
1385aa5771
145059b217
153181b68b
hex1f992ff5

530132981 has 16 divisors (see below), whose sum is σ = 642403584. Its totient is φ = 427071744.

The previous prime is 530132969. The next prime is 530132987. The reversal of 530132981 is 189231035.

It is a cyclic number.

It is not a de Polignac number, because 530132981 - 210 = 530131957 is a prime.

It is a super-2 number, since 2×5301329812 = 562081955087892722, 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 (530132987) 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, 95231 + ... + 100643.

It is an arithmetic number, because the mean of its divisors is an integer number (40150224).

Almost surely, 2530132981 is an apocalyptic number.

It is an amenable number.

530132981 is a deficient number, since it is larger than the sum of its proper divisors (112270603).

530132981 is a wasteful number, since it uses less digits than its factorization.

530132981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6260.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 530132981 is about 23024.6168480607. The cubic root of 530132981 is about 809.3349115488.

The spelling of 530132981 in words is "five hundred thirty million, one hundred thirty-two thousand, nine hundred eighty-one".

Divisors: 1 7 17 119 823 5413 5761 13991 37891 92021 97937 644147 4454899 31184293 75733283 530132981