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28760472 = 23321330727
BaseRepresentation
bin110110110110…
…1100110011000
32000010011221200
41231231212120
524330313342
62504234200
7466313526
oct155554630
960104850
1028760472
1115264194
12976b960
135c5ca40
143b69316
1527d194c
hex1b6d998

28760472 has 48 divisors (see below), whose sum is σ = 83887440. Its totient is φ = 8849088.

The previous prime is 28760461. The next prime is 28760519. The reversal of 28760472 is 27406782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14428 + ... + 16299.

It is an arithmetic number, because the mean of its divisors is an integer number (1747655).

Almost surely, 228760472 is an apocalyptic number.

It is an amenable number.

28760472 is an abundant number, since it is smaller than the sum of its proper divisors (55126968).

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

28760472 is a wasteful number, since it uses less digits than its factorization.

28760472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30752 (or 30745 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 28760472 is about 5362.8790775105. The cubic root of 28760472 is about 306.3834741250.

The spelling of 28760472 in words is "twenty-eight million, seven hundred sixty thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 13 18 24 26 36 39 52 72 78 104 117 156 234 312 468 936 30727 61454 92181 122908 184362 245816 276543 368724 399451 553086 737448 798902 1106172 1198353 1597804 2212344 2396706 3195608 3595059 4793412 7190118 9586824 14380236 28760472