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30108293 = 1929531031
BaseRepresentation
bin111001011011…
…0101010000101
32002122122210222
41302312222011
530201431133
62553154125
7513626165
oct162665205
962578728
1030108293
1115aa4896
12a0bb945
136312377
143dda5a5
15299ae98
hex1cb6a85

30108293 has 16 divisors (see below), whose sum is σ = 33436800. Its totient is φ = 26994240.

The previous prime is 30108277. The next prime is 30108301. The reversal of 30108293 is 39280103.

It is a cyclic number.

It is not a de Polignac number, because 30108293 - 24 = 30108277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30108893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28688 + ... + 29718.

It is an arithmetic number, because the mean of its divisors is an integer number (2089800).

Almost surely, 230108293 is an apocalyptic number.

It is an amenable number.

30108293 is a deficient number, since it is larger than the sum of its proper divisors (3328507).

30108293 is a wasteful number, since it uses less digits than its factorization.

30108293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 30108293 is about 5487.1024229551. The cubic root of 30108293 is about 311.0966811004.

Adding to 30108293 its reverse (39280103), we get a palindrome (69388396).

The spelling of 30108293 in words is "thirty million, one hundred eight thousand, two hundred ninety-three".

Divisors: 1 19 29 53 551 1007 1031 1537 19589 29203 29899 54643 568081 1038217 1584647 30108293