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28760572086 = 2317385373181
BaseRepresentation
bin11010110010010000…
…111000000010110110
32202020101002102220120
4122302100320002312
5432400201301321
621113514512410
72035466554251
oct326220700266
982211072816
1028760572086
1111219658544
1256a7a35706
1329346775bc
14156b9b4098
15b34e00ec6
hex6b24380b6

28760572086 has 32 divisors (see below), whose sum is σ = 60921380448. Its totient is φ = 9020459520.

The previous prime is 28760572037. The next prime is 28760572091. The reversal of 28760572086 is 68027506782.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

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, 356416 + ... + 429596.

It is an arithmetic number, because the mean of its divisors is an integer number (1903793139).

Almost surely, 228760572086 is an apocalyptic number.

28760572086 is an abundant number, since it is smaller than the sum of its proper divisors (32160808362).

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

28760572086 is a wasteful number, since it uses less digits than its factorization.

28760572086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77056.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 28760572086 in words is "twenty-eight billion, seven hundred sixty million, five hundred seventy-two thousand, eighty-six".

Divisors: 1 2 3 6 17 34 51 102 3853 7706 11559 23118 65501 73181 131002 146362 196503 219543 393006 439086 1244077 2488154 3732231 7464462 281966393 563932786 845899179 1691798358 4793428681 9586857362 14380286043 28760572086