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30385371 = 367151171
BaseRepresentation
bin111001111101…
…0010011011011
32010011201220010
41303322103123
530234312441
63003133003
7516162042
oct163722333
963151803
1030385371
1116173a85
12a214163
1363ab513
14406d559
152a03116
hex1cfa4db

30385371 has 8 divisors (see below), whose sum is σ = 41118784. Its totient is φ = 19954440.

The previous prime is 30385357. The next prime is 30385393. The reversal of 30385371 is 17358303.

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

It is not a de Polignac number, because 30385371 - 25 = 30385339 is a prime.

It is a super-3 number, since 3×303853713 (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30385331) 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, 75385 + ... + 75786.

It is an arithmetic number, because the mean of its divisors is an integer number (5139848).

Almost surely, 230385371 is an apocalyptic number.

30385371 is a deficient number, since it is larger than the sum of its proper divisors (10733413).

30385371 is a wasteful number, since it uses less digits than its factorization.

30385371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151241.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 30385371 is about 5512.2927171913. The cubic root of 30385371 is about 312.0480797864.

The spelling of 30385371 in words is "thirty million, three hundred eighty-five thousand, three hundred seventy-one".

Divisors: 1 3 67 201 151171 453513 10128457 30385371