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28471007830 = 254360965287
BaseRepresentation
bin11010100001000000…
…010001101001010110
32201111012020001102111
4122201000101221112
5431302034222310
621025052301234
72025352400506
oct324100215126
981435201374
1028471007830
1111090161641
125626a7181a
1328b96917c5
141541359a06
15b197a428a
hex6a1011a56

28471007830 has 16 divisors (see below), whose sum is σ = 51249774240. Its totient is φ = 11387967552.

The previous prime is 28471007821. The next prime is 28471007849. The reversal of 28471007830 is 3870017482.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 403447 + ... + 468733.

It is an arithmetic number, because the mean of its divisors is an integer number (3203110890).

Almost surely, 228471007830 is an apocalyptic number.

28471007830 is a deficient number, since it is larger than the sum of its proper divisors (22778766410).

28471007830 is a wasteful number, since it uses less digits than its factorization.

28471007830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108903.

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 28471007830 in words is "twenty-eight billion, four hundred seventy-one million, seven thousand, eight hundred thirty".

Divisors: 1 2 5 10 43609 65287 87218 130574 218045 326435 436090 652870 2847100783 5694201566 14235503915 28471007830