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30130233 = 373121493
BaseRepresentation
bin111001011110…
…0000000111001
32002200202220120
41302330000321
530203131413
62553443453
7514050150
oct162740071
962622816
1030130233
111600a321
12a110589
13631c353
144004597
1529a2723
hex1cbc039

30130233 has 24 divisors (see below), whose sum is σ = 47473344. Its totient is φ = 16650720.

The previous prime is 30130231. The next prime is 30130249. The reversal of 30130233 is 33203103.

It is not a de Polignac number, because 30130233 - 21 = 30130231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30130231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19435 + ... + 20927.

It is an arithmetic number, because the mean of its divisors is an integer number (1978056).

Almost surely, 230130233 is an apocalyptic number.

It is an amenable number.

30130233 is a deficient number, since it is larger than the sum of its proper divisors (17343111).

30130233 is a wasteful number, since it uses less digits than its factorization.

30130233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1534 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 30130233 is about 5489.1012925615. The cubic root of 30130233 is about 311.1722284359.

Adding to 30130233 its reverse (33203103), we get a palindrome (63333336).

The spelling of 30130233 in words is "thirty million, one hundred thirty thousand, two hundred thirty-three".

Divisors: 1 3 7 21 31 93 217 651 961 1493 2883 4479 6727 10451 20181 31353 46283 138849 323981 971943 1434773 4304319 10043411 30130233