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28805652316 = 2271983652361
BaseRepresentation
bin11010110100111100…
…110101111101011100
32202100111220202100201
4122310330311331130
5432443221333231
621122205033244
72036555001430
oct326474657534
982314822321
1028805652316
1111242048a31
1256bab55824
132940acc5ac
14157398a9c0
15b38d58161
hex6b4f35f5c

28805652316 has 48 divisors (see below), whose sum is σ = 61374216960. Its totient is φ = 11554600320.

The previous prime is 28805652307. The next prime is 28805652319. The reversal of 28805652316 is 61325650882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805652319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282025 + ... + 370336.

It is an arithmetic number, because the mean of its divisors is an integer number (1278629520).

Almost surely, 228805652316 is an apocalyptic number.

It is an amenable number.

28805652316 is an abundant number, since it is smaller than the sum of its proper divisors (32568564644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28805652316 is a wasteful number, since it uses less digits than its factorization.

28805652316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652474 (or 652472 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 28805652316 in words is "twenty-eight billion, eight hundred five million, six hundred fifty-two thousand, three hundred sixteen".

Divisors: 1 2 4 7 14 19 28 38 76 83 133 166 266 332 532 581 1162 1577 2324 3154 6308 11039 22078 44156 652361 1304722 2609444 4566527 9133054 12394859 18266108 24789718 49579436 54145963 86764013 108291926 173528026 216583852 347056052 379021741 758043482 1028773297 1516086964 2057546594 4115093188 7201413079 14402826158 28805652316