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28316760 = 23352979103
BaseRepresentation
bin110110000000…
…1010001011000
31222021122021220
41230001101120
524222114020
62450532040
7462455103
oct154012130
958248256
1028316760
1114a9088a
129597020
135b35aa4
143a9173a
152745240
hex1b01458

28316760 has 128 divisors (see below), whose sum is σ = 89856000. Its totient is φ = 7128576.

The previous prime is 28316711. The next prime is 28316779. The reversal of 28316760 is 6761382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274869 + ... + 274971.

It is an arithmetic number, because the mean of its divisors is an integer number (702000).

Almost surely, 228316760 is an apocalyptic number.

28316760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28316760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44928000).

28316760 is an abundant number, since it is smaller than the sum of its proper divisors (61539240).

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

28316760 is a wasteful number, since it uses less digits than its factorization.

28316760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 28316760 is about 5321.3494529114. The cubic root of 28316760 is about 304.7996893102.

It can be divided in two parts, 2831 and 6760, that added together give a triangular number (9591 = T138).

The spelling of 28316760 in words is "twenty-eight million, three hundred sixteen thousand, seven hundred sixty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 29 30 40 58 60 79 87 103 116 120 145 158 174 206 232 237 290 309 316 348 395 412 435 474 515 580 618 632 696 790 824 870 948 1030 1160 1185 1236 1545 1580 1740 1896 2060 2291 2370 2472 2987 3090 3160 3480 4120 4582 4740 5974 6180 6873 8137 8961 9164 9480 11455 11948 12360 13746 14935 16274 17922 18328 22910 23896 24411 27492 29870 32548 34365 35844 40685 44805 45820 48822 54984 59740 65096 68730 71688 81370 89610 91640 97644 119480 122055 137460 162740 179220 195288 235973 244110 274920 325480 358440 471946 488220 707919 943892 976440 1179865 1415838 1887784 2359730 2831676 3539595 4719460 5663352 7079190 9438920 14158380 28316760