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28108362048 = 2631313981017
BaseRepresentation
bin11010001011011000…
…111001000101000000
32200112220211201221020
4122023120321011000
5430031220041143
620525055425440
72013360064254
oct321330710500
980486751836
1028108362048
1110a1448a488
125545525280
13285c4cb6c0
14150911a264
15ae7a1d883
hex68b639140

28108362048 has 112 divisors (see below), whose sum is σ = 80668002240. Its totient is φ = 8586399744.

The previous prime is 28108362001. The next prime is 28108362053. The reversal of 28108362048 is 84026380182.

It is a happy number.

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, 306436 + ... + 387452.

It is an arithmetic number, because the mean of its divisors is an integer number (720250020).

Almost surely, 228108362048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28108362048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40334001120).

28108362048 is an abundant number, since it is smaller than the sum of its proper divisors (52559640192).

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

28108362048 is a wasteful number, since it uses less digits than its factorization.

28108362048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81184 (or 81174 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The spelling of 28108362048 in words is "twenty-eight billion, one hundred eight million, three hundred sixty-two thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 64 78 96 104 139 156 192 208 278 312 416 417 556 624 832 834 1112 1248 1668 1807 2224 2496 3336 3614 4448 5421 6672 7228 8896 10842 13344 14456 21684 26688 28912 43368 57824 81017 86736 115648 162034 173472 243051 324068 346944 486102 648136 972204 1053221 1296272 1944408 2106442 2592544 3159663 3888816 4212884 5185088 6319326 7777632 8425768 11261363 12638652 15555264 16851536 22522726 25277304 33703072 33784089 45045452 50554608 67406144 67568178 90090904 101109216 135136356 146397719 180181808 202218432 270272712 292795438 360363616 439193157 540545424 585590876 720727232 878386314 1081090848 1171181752 1756772628 2162181696 2342363504 3513545256 4684727008 7027090512 9369454016 14054181024 28108362048