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28476084 = 22371389293
BaseRepresentation
bin110110010100…
…0001010110100
31222120201211210
41230220022310
524242213314
62454201420
7464020440
oct154501264
958521753
1028476084
111508a55a
129653270
135b90470
143ad3820
152777559
hex1b282b4

28476084 has 96 divisors (see below), whose sum is σ = 82978560. Its totient is φ = 7400448.

The previous prime is 28476061. The next prime is 28476089. The reversal of 28476084 is 48067482.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28476089) 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 31 ways as a sum of consecutive naturals, for example, 97042 + ... + 97334.

It is an arithmetic number, because the mean of its divisors is an integer number (864360).

Almost surely, 228476084 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 28476084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41489280).

28476084 is an abundant number, since it is smaller than the sum of its proper divisors (54502476).

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

28476084 is a wasteful number, since it uses less digits than its factorization.

28476084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 28476084 is about 5336.2987172759. The cubic root of 28476084 is about 305.3702714391.

The spelling of 28476084 in words is "twenty-eight million, four hundred seventy-six thousand, eighty-four".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 39 42 52 78 84 89 91 156 178 182 267 273 293 356 364 534 546 586 623 879 1068 1092 1157 1172 1246 1758 1869 2051 2314 2492 3471 3516 3738 3809 4102 4628 6153 6942 7476 7618 8099 8204 11427 12306 13884 15236 16198 22854 24297 24612 26077 26663 32396 45708 48594 52154 53326 78231 79989 97188 104308 106652 156462 159978 182539 312924 319956 339001 365078 547617 678002 730156 1017003 1095234 1356004 2034006 2190468 2373007 4068012 4746014 7119021 9492028 14238042 28476084