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30675385 = 513471929
BaseRepresentation
bin111010100000…
…1000110111001
32010201110201101
41311001012321
530323103020
63013251401
7521510416
oct165010671
963643641
1030675385
1116351964
12a333b61
136480520
14410710d
152a5e00a
hex1d411b9

30675385 has 8 divisors (see below), whose sum is σ = 39642120. Its totient is φ = 22652544.

The previous prime is 30675371. The next prime is 30675397. The reversal of 30675385 is 58357603.

It can be written as a sum of positive squares in 4 ways, for example, as 5645376 + 25030009 = 2376^2 + 5003^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30675385 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235900 + ... + 236029.

It is an arithmetic number, because the mean of its divisors is an integer number (4955265).

Almost surely, 230675385 is an apocalyptic number.

It is an amenable number.

30675385 is a deficient number, since it is larger than the sum of its proper divisors (8966735).

30675385 is a wasteful number, since it uses less digits than its factorization.

30675385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471947.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 30675385 is about 5538.5363590032. The cubic root of 30675385 is about 313.0377216733.

The spelling of 30675385 in words is "thirty million, six hundred seventy-five thousand, three hundred eighty-five".

Divisors: 1 5 13 65 471929 2359645 6135077 30675385