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38028988536 = 23371120578457
BaseRepresentation
bin100011011010101101…
…000101000001111000
310122011022020210001220
4203122231011001320
51110340410113121
625245325112040
72514252032460
oct433255050170
9118138223056
1038028988536
1115145410a50
1274539b8620
1337809179a6
141baa8daba0
15ec894d6c6
hex8dab45078

38028988536 has 64 divisors (see below), whose sum is σ = 118531918080. Its totient is φ = 9877658880.

The previous prime is 38028988511. The next prime is 38028988579. The reversal of 38028988536 is 63588982083.

It is a self number, because there is not a number n which added to its sum of digits gives 38028988536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10287381 + ... + 10291076.

It is an arithmetic number, because the mean of its divisors is an integer number (1852061220).

Almost surely, 238028988536 is an apocalyptic number.

It is an amenable number.

38028988536 is an abundant number, since it is smaller than the sum of its proper divisors (80502929544).

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

38028988536 is a wasteful number, since it uses less digits than its factorization.

38028988536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20578484 (or 20578480 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 38028988536 in words is "thirty-eight billion, twenty-eight million, nine hundred eighty-eight thousand, five hundred thirty-six".

Divisors: 1 2 3 4 6 7 8 11 12 14 21 22 24 28 33 42 44 56 66 77 84 88 132 154 168 231 264 308 462 616 924 1848 20578457 41156914 61735371 82313828 123470742 144049199 164627656 226363027 246941484 288098398 432147597 452726054 493882968 576196796 679089081 864295194 905452108 1152393592 1358178162 1584541189 1728590388 1810904216 2716356324 3169082378 3457180776 4753623567 5432712648 6338164756 9507247134 12676329512 19014494268 38028988536