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28660912430 = 252866091243
BaseRepresentation
bin11010101100010100…
…101101000100101110
32201222102120012120012
4122230110231010232
5432144143144210
621055554453222
72033146510313
oct325424550456
981872505505
1028660912430
1111178379797
12567a594212
132919b229a7
14155c670d0a
15b2b2b7305
hex6ac52d12e

28660912430 has 8 divisors (see below), whose sum is σ = 51589642392. Its totient is φ = 11464364968.

The previous prime is 28660912333. The next prime is 28660912439. The reversal of 28660912430 is 3421906682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660912439) 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, 1433045612 + ... + 1433045631.

It is an arithmetic number, because the mean of its divisors is an integer number (6448705299).

Almost surely, 228660912430 is an apocalyptic number.

28660912430 is a deficient number, since it is larger than the sum of its proper divisors (22928729962).

28660912430 is a wasteful number, since it uses less digits than its factorization.

28660912430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866091250.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 28660912430 in words is "twenty-eight billion, six hundred sixty million, nine hundred twelve thousand, four hundred thirty".

Divisors: 1 2 5 10 2866091243 5732182486 14330456215 28660912430