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30670869 = 328136383
BaseRepresentation
bin111010100000…
…0000000010101
32010201020112010
41311000000111
530322431434
63013214433
7521461305
oct165000025
963636463
1030670869
1116349529
12a331419
13647b458
144105605
152a5c9e9
hex1d40015

30670869 has 8 divisors (see below), whose sum is σ = 41041152. Its totient is φ = 20373920.

The previous prime is 30670867. The next prime is 30670889. The reversal of 30670869 is 96807603.

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 30670869 - 21 = 30670867 is a prime.

It is a super-2 number, since 2×306708692 = 1881404410430322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30670867) 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, 17349 + ... + 19034.

It is an arithmetic number, because the mean of its divisors is an integer number (5130144).

Almost surely, 230670869 is an apocalyptic number.

It is an amenable number.

30670869 is a deficient number, since it is larger than the sum of its proper divisors (10370283).

30670869 is a wasteful number, since it uses less digits than its factorization.

30670869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36667.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 30670869 is about 5538.1286550603. The cubic root of 30670869 is about 313.0223592175.

The spelling of 30670869 in words is "thirty million, six hundred seventy thousand, eight hundred sixty-nine".

Divisors: 1 3 281 843 36383 109149 10223623 30670869