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30020193 = 337222691
BaseRepresentation
bin111001010000…
…1001001100001
32002111011222000
41302201021201
530141121233
62551234213
7513111300
oct162411141
962434860
1030020193
1115a44685
12a078969
1362b1238
143db6437
15297ed13
hex1ca1261

30020193 has 24 divisors (see below), whose sum is σ = 51737760. Its totient is φ = 17153640.

The previous prime is 30020189. The next prime is 30020213. The reversal of 30020193 is 39102003.

It is not a de Polignac number, because 30020193 - 22 = 30020189 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30020173) 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, 10023 + ... + 12668.

It is an arithmetic number, because the mean of its divisors is an integer number (2155740).

Almost surely, 230020193 is an apocalyptic number.

It is an amenable number.

30020193 is a deficient number, since it is larger than the sum of its proper divisors (21717567).

30020193 is a wasteful number, since it uses less digits than its factorization.

30020193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22714 (or 22701 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 30020193 is about 5479.0686252318. The cubic root of 30020193 is about 310.7929508993.

Adding to 30020193 its reverse (39102003), we get a palindrome (69122196).

The spelling of 30020193 in words is "thirty million, twenty thousand, one hundred ninety-three".

Divisors: 1 3 7 9 21 27 49 63 147 189 441 1323 22691 68073 158837 204219 476511 612657 1111859 1429533 3335577 4288599 10006731 30020193