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530430440 = 23515238707
BaseRepresentation
bin11111100111011…
…011100111101000
31100222002122202212
4133213123213220
52041242233230
6124344544252
716100404301
oct3747334750
91328078685
10530430440
11252461271
12129782088
1385b7ac87
14506377a8
1531879895
hex1f9db9e8

530430440 has 32 divisors (see below), whose sum is σ = 1194389280. Its totient is φ = 212008512.

The previous prime is 530430431. The next prime is 530430449. The reversal of 530430440 is 44034035.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (530430431) and next prime (530430449).

It is not an unprimeable number, because it can be changed into a prime (530430449) 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, 56567 + ... + 65273.

It is an arithmetic number, because the mean of its divisors is an integer number (37324665).

Almost surely, 2530430440 is an apocalyptic number.

It is an amenable number.

530430440 is an abundant number, since it is smaller than the sum of its proper divisors (663958840).

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

530430440 is a wasteful number, since it uses less digits than its factorization.

530430440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10241 (or 10237 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 530430440 is about 23031.0755285115. The cubic root of 530430440 is about 809.4862565564.

Adding to 530430440 its reverse (44034035), we get a palindrome (574464475).

The spelling of 530430440 in words is "five hundred thirty million, four hundred thirty thousand, four hundred forty".

Divisors: 1 2 4 5 8 10 20 40 1523 3046 6092 7615 8707 12184 15230 17414 30460 34828 43535 60920 69656 87070 174140 348280 13260761 26521522 53043044 66303805 106086088 132607610 265215220 530430440