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30145593 = 310048531
BaseRepresentation
bin111001011111…
…1110000111001
32002201112222110
41302333300321
530204124333
62554042533
7514143012
oct162776071
962645873
1030145593
111601a915
12a119449
13632633a
14400a009
1529a7063
hex1cbfc39

30145593 has 4 divisors (see below), whose sum is σ = 40194128. Its totient is φ = 20097060.

The previous prime is 30145579. The next prime is 30145597. The reversal of 30145593 is 39554103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39554103 = 313184701.

It is not a de Polignac number, because 30145593 - 25 = 30145561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30145593.

It is not an unprimeable number, because it can be changed into a prime (30145597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5024263 + ... + 5024268.

It is an arithmetic number, because the mean of its divisors is an integer number (10048532).

Almost surely, 230145593 is an apocalyptic number.

It is an amenable number.

30145593 is a deficient number, since it is larger than the sum of its proper divisors (10048535).

30145593 is a wasteful number, since it uses less digits than its factorization.

30145593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10048534.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 30145593 is about 5490.5002504326. The cubic root of 30145593 is about 311.2250966350.

Adding to 30145593 its reverse (39554103), we get a palindrome (69699696).

The spelling of 30145593 in words is "thirty million, one hundred forty-five thousand, five hundred ninety-three".

Divisors: 1 3 10048531 30145593