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30475097 = 112926993
BaseRepresentation
bin111010001000…
…0001101011001
32010100021222022
41310100031121
530300200342
63005104225
7520014452
oct164201531
963307868
1030475097
1116225434
12a258075
136410303
144094129
152a1e9d2
hex1d10359

30475097 has 4 divisors (see below), whose sum is σ = 30503220. Its totient is φ = 30446976.

The previous prime is 30475079. The next prime is 30475121. The reversal of 30475097 is 79057403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79057403 = 611296023.

It can be written as a sum of positive squares in 2 ways, for example, as 1948816 + 28526281 = 1396^2 + 5341^2 .

It is a cyclic number.

It is not a de Polignac number, because 30475097 - 220 = 29426521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30475037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12368 + ... + 14625.

It is an arithmetic number, because the mean of its divisors is an integer number (7625805).

Almost surely, 230475097 is an apocalyptic number.

It is an amenable number.

30475097 is a deficient number, since it is larger than the sum of its proper divisors (28123).

30475097 is a wasteful number, since it uses less digits than its factorization.

30475097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28122.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 30475097 is about 5520.4254365040. The cubic root of 30475097 is about 312.3549304258.

The spelling of 30475097 in words is "thirty million, four hundred seventy-five thousand, ninety-seven".

Divisors: 1 1129 26993 30475097