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30385653 = 310128551
BaseRepresentation
bin111001111101…
…0010111110101
32010011202021120
41303322113311
530234320103
63003134153
7516162624
oct163722765
963152246
1030385653
1116174211
12a214359
1363ab69c
14406d6bb
152a03253
hex1cfa5f5

30385653 has 4 divisors (see below), whose sum is σ = 40514208. Its totient is φ = 20257100.

The previous prime is 30385651. The next prime is 30385669. The reversal of 30385653 is 35658303.

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.

It is a cyclic number.

It is not a de Polignac number, because 30385653 - 21 = 30385651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30385651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064273 + ... + 5064278.

It is an arithmetic number, because the mean of its divisors is an integer number (10128552).

Almost surely, 230385653 is an apocalyptic number.

It is an amenable number.

30385653 is a deficient number, since it is larger than the sum of its proper divisors (10128555).

30385653 is a wasteful number, since it uses less digits than its factorization.

30385653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10128554.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 30385653 is about 5512.3182963251. The cubic root of 30385653 is about 312.0490451334.

The spelling of 30385653 in words is "thirty million, three hundred eighty-five thousand, six hundred fifty-three".

Divisors: 1 3 10128551 30385653