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30052513 = 231916841
BaseRepresentation
bin111001010100…
…1000010100001
32002112211022001
41302221002201
530143140023
62552044001
7513304441
oct162510241
962484261
1030052513
1115a66997
12a093601
1362c2b6a
143dc4121
1529896ad
hex1ca90a1

30052513 has 8 divisors (see below), whose sum is σ = 31527936. Its totient is φ = 28591200.

The previous prime is 30052511. The next prime is 30052523. The reversal of 30052513 is 31525003.

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

It is a cyclic number.

It is not a de Polignac number, because 30052513 - 21 = 30052511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30052511) 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, 973 + ... + 7813.

It is an arithmetic number, because the mean of its divisors is an integer number (3940992).

Almost surely, 230052513 is an apocalyptic number.

It is an amenable number.

30052513 is a deficient number, since it is larger than the sum of its proper divisors (1475423).

30052513 is a wasteful number, since it uses less digits than its factorization.

30052513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30052513 is about 5482.0172382071. The cubic root of 30052513 is about 310.9044450253.

Adding to 30052513 its reverse (31525003), we get a palindrome (61577516).

The spelling of 30052513 in words is "thirty million, fifty-two thousand, five hundred thirteen".

Divisors: 1 23 191 4393 6841 157343 1306631 30052513