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30000223 = 111729437
BaseRepresentation
bin111001001110…
…0010001011111
32002110011120101
41302130101133
530140001343
62551001531
7512666131
oct162342137
962404511
1030000223
1115a30680
12a0692a7
1362a5116
143dad051
152978e4d
hex1c9c45f

30000223 has 12 divisors (see below), whose sum is σ = 34769592. Its totient is φ = 25665920.

The previous prime is 30000199. The next prime is 30000247. The reversal of 30000223 is 32200003.

It is an interprime number because it is at equal distance from previous prime (30000199) and next prime (30000247).

It is a de Polignac number, because none of the positive numbers 2k-30000223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1540 + ... + 7897.

It is an arithmetic number, because the mean of its divisors is an integer number (2897466).

Almost surely, 230000223 is an apocalyptic number.

30000223 is a deficient number, since it is larger than the sum of its proper divisors (4769369).

30000223 is a wasteful number, since it uses less digits than its factorization.

30000223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9482 (or 9465 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 30000223 is about 5477.2459320356. The cubic root of 30000223 is about 310.7240204966.

Adding to 30000223 its reverse (32200003), we get a palindrome (62200226).

It can be divided in two parts, 3000022 and 3, that added together give a triangular number (3000025 = T2449).

The spelling of 30000223 in words is "thirty million, two hundred twenty-three", and thus it is an aban number.

Divisors: 1 11 17 187 289 3179 9437 103807 160429 1764719 2727293 30000223