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30242163 = 372419491
BaseRepresentation
bin111001101011…
…1010101110011
32002220110110010
41303113111303
530220222123
63000110003
7515024400
oct163272563
962813403
1030242163
1116086426
12a165303
13635b293
1440332a7
1529c5993
hex1cd7573

30242163 has 24 divisors (see below), whose sum is σ = 47113920. Its totient is φ = 17204880.

The previous prime is 30242131. The next prime is 30242189. The reversal of 30242163 is 36124203.

It is a happy number.

30242163 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 30242163 - 25 = 30242131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (30242123) 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, 61348 + ... + 61838.

It is an arithmetic number, because the mean of its divisors is an integer number (1963080).

Almost surely, 230242163 is an apocalyptic number.

30242163 is a deficient number, since it is larger than the sum of its proper divisors (16871757).

30242163 is a wasteful number, since it uses less digits than its factorization.

30242163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 30242163 is about 5499.2874993039. The cubic root of 30242163 is about 311.5570740853.

Adding to 30242163 its reverse (36124203), we get a palindrome (66366366).

The spelling of 30242163 in words is "thirty million, two hundred forty-two thousand, one hundred sixty-three".

Divisors: 1 3 7 21 49 147 419 491 1257 1473 2933 3437 8799 10311 20531 24059 61593 72177 205729 617187 1440103 4320309 10080721 30242163