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30000513 = 327136901
BaseRepresentation
bin111001001110…
…0010110000001
32002110011222010
41302130112001
530140004023
62551003133
7513000024
oct162342601
962404863
1030000513
1115a30914
12a0694a9
1362a52aa
143dad1bb
152979093
hex1c9c581

30000513 has 8 divisors (see below), whose sum is σ = 40149376. Its totient is φ = 19926000.

The previous prime is 30000511. The next prime is 30000521. The reversal of 30000513 is 31500003.

It is a happy number.

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

It is not a de Polignac number, because 30000513 - 21 = 30000511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30000511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17638 + ... + 19263.

It is an arithmetic number, because the mean of its divisors is an integer number (5018672).

Almost surely, 230000513 is an apocalyptic number.

It is an amenable number.

30000513 is a deficient number, since it is larger than the sum of its proper divisors (10148863).

30000513 is a wasteful number, since it uses less digits than its factorization.

30000513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37175.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 30000513 is about 5477.2724051301. The cubic root of 30000513 is about 310.7250217078.

Adding to 30000513 its reverse (31500003), we get a palindrome (61500516).

The spelling of 30000513 in words is "thirty million, five hundred thirteen", and thus it is an aban number.

Divisors: 1 3 271 813 36901 110703 10000171 30000513