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28333080 = 23325211373
BaseRepresentation
bin110110000010…
…1010000011000
31222022110200100
41230011100120
524223124310
62451135400
7462553506
oct154052030
958273610
1028333080
1114aa2076
1295a4560
135b40349
143a97676
152749ec0
hex1b05418

28333080 has 96 divisors (see below), whose sum is σ = 92766960. Its totient is φ = 7499520.

The previous prime is 28333069. The next prime is 28333093. The reversal of 28333080 is 8033382.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75774 + ... + 76146.

Almost surely, 228333080 is an apocalyptic number.

28333080 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 28333080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46383480).

28333080 is an abundant number, since it is smaller than the sum of its proper divisors (64433880).

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

28333080 is a wasteful number, since it uses less digits than its factorization.

28333080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 28333080 is about 5322.8826776475. The cubic root of 28333080 is about 304.8582338565.

The spelling of 28333080 in words is "twenty-eight million, three hundred thirty-three thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 211 360 373 422 633 746 844 1055 1119 1266 1492 1688 1865 1899 2110 2238 2532 2984 3165 3357 3730 3798 4220 4476 5064 5595 6330 6714 7460 7596 8440 8952 9495 11190 12660 13428 14920 15192 16785 18990 22380 25320 26856 33570 37980 44760 67140 75960 78703 134280 157406 236109 314812 393515 472218 629624 708327 787030 944436 1180545 1416654 1574060 1888872 2361090 2833308 3148120 3541635 4722180 5666616 7083270 9444360 14166540 28333080