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28800048 = 24319231373
BaseRepresentation
bin110110111011…
…1010000110000
32000012012020110
41231313100300
524333100143
62505141320
7466540104
oct155672060
960165213
1028800048
11152909a2
12978a840
135c74a64
143b79904
1527dd533
hex1b77430

28800048 has 80 divisors (see below), whose sum is σ = 81780480. Its totient is φ = 8692992.

The previous prime is 28800047. The next prime is 28800059. The reversal of 28800048 is 84000882.

It is a junction number, because it is equal to n+sod(n) for n = 28799988 and 28800024.

It is not an unprimeable number, because it can be changed into a prime (28800043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20290 + ... + 21662.

It is an arithmetic number, because the mean of its divisors is an integer number (1022256).

Almost surely, 228800048 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 28800048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40890240).

28800048 is an abundant number, since it is smaller than the sum of its proper divisors (52980432).

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

28800048 is a wasteful number, since it uses less digits than its factorization.

28800048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426 (or 1420 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 28800048 is about 5366.5676181336. The cubic root of 28800048 is about 306.5239432483.

It can be divided in two parts, 288000 and 48, that multiplied together give a cube (13824000 = 2403).

The spelling of 28800048 in words is "twenty-eight million, eight hundred thousand, forty-eight".

Divisors: 1 2 3 4 6 8 12 16 19 23 24 38 46 48 57 69 76 92 114 138 152 184 228 276 304 368 437 456 552 874 912 1104 1311 1373 1748 2622 2746 3496 4119 5244 5492 6992 8238 10488 10984 16476 20976 21968 26087 31579 32952 52174 63158 65904 78261 94737 104348 126316 156522 189474 208696 252632 313044 378948 417392 505264 600001 626088 757896 1200002 1252176 1515792 1800003 2400004 3600006 4800008 7200012 9600016 14400024 28800048