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9157430906 = 213352208881
BaseRepresentation
bin10001000011101001…
…10100111001111010
3212122012022200121122
420201310310321322
5122223300242111
64112403305242
7442633610201
oct104164647172
925565280548
109157430906
11397a149418
12193697b222
13b2c281590
1462c2b6238
15388e27cdb
hex221d34e7a

9157430906 has 8 divisors (see below), whose sum is σ = 14792773044. Its totient is φ = 4226506560.

The previous prime is 9157430903. The next prime is 9157430941. The reversal of 9157430906 is 6090347519.

9157430906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7291622881 + 1865808025 = 85391^2 + 43195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9157430903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176104415 + ... + 176104466.

Almost surely, 29157430906 is an apocalyptic number.

9157430906 is a deficient number, since it is larger than the sum of its proper divisors (5635342138).

9157430906 is a wasteful number, since it uses less digits than its factorization.

9157430906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352208896.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 9157430906 is about 95694.4664335405. The cubic root of 9157430906 is about 2092.1422831265.

The spelling of 9157430906 in words is "nine billion, one hundred fifty-seven million, four hundred thirty thousand, nine hundred six".

Divisors: 1 2 13 26 352208881 704417762 4578715453 9157430906