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28902060 = 223251121327
BaseRepresentation
bin110111001000…
…0001010101100
32000101101011200
41232100022230
524344331220
62511245500
7500443365
oct156201254
960341150
1028902060
1115350600
129819890
135cac315
143ba4b6c
15280d890
hex1b902ac

28902060 has 108 divisors (see below), whose sum is σ = 96436704. Its totient is φ = 7001280.

The previous prime is 28902047. The next prime is 28902061. The reversal of 28902060 is 6020982.

It is not an unprimeable number, because it can be changed into a prime (28902061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21117 + ... + 22443.

Almost surely, 228902060 is an apocalyptic number.

28902060 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 28902060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48218352).

28902060 is an abundant number, since it is smaller than the sum of its proper divisors (67534644).

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

28902060 is a wasteful number, since it uses less digits than its factorization.

28902060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28902060 is about 5376.0636156950. The cubic root of 28902060 is about 306.8854272959.

It can be divided in two parts, 2890 and 2060, that added together give a triangular number (4950 = T99).

The spelling of 28902060 in words is "twenty-eight million, nine hundred two thousand, sixty".

Divisors: 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 121 132 165 180 198 220 242 330 363 396 484 495 605 660 726 990 1089 1210 1327 1452 1815 1980 2178 2420 2654 3630 3981 4356 5308 5445 6635 7260 7962 10890 11943 13270 14597 15924 19905 21780 23886 26540 29194 39810 43791 47772 58388 59715 72985 79620 87582 119430 131373 145970 160567 175164 218955 238860 262746 291940 321134 437910 481701 525492 642268 656865 802835 875820 963402 1313730 1445103 1605670 1926804 2408505 2627460 2890206 3211340 4817010 5780412 7225515 9634020 14451030 28902060