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28036752120 = 23325135990759
BaseRepresentation
bin11010000111000111…
…101110001011111000
32200100221002120120200
4122013013232023320
5424404402031440
620514020522200
72011530314046
oct320707561370
980327076520
1028036752120
1110988019923
125525550360
13284a718170
1414dd7d9396
15ae15c5c30
hex6871ee2f8

28036752120 has 96 divisors (see below), whose sum is σ = 98128648800. Its totient is φ = 6901353216.

The previous prime is 28036752049. The next prime is 28036752137. The reversal of 28036752120 is 2125763082.

28036752120 is a `hidden beast` number, since 2 + 80 + 36 + 7 + 521 + 20 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2990700 + ... + 3000059.

It is an arithmetic number, because the mean of its divisors is an integer number (1022173425).

Almost surely, 228036752120 is an apocalyptic number.

28036752120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28036752120 is an abundant number, since it is smaller than the sum of its proper divisors (70091896680).

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

28036752120 is a wasteful number, since it uses less digits than its factorization.

28036752120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5990789 (or 5990782 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 28036752120 in words is "twenty-eight billion, thirty-six million, seven hundred fifty-two thousand, one hundred twenty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 36 39 40 45 52 60 65 72 78 90 104 117 120 130 156 180 195 234 260 312 360 390 468 520 585 780 936 1170 1560 2340 4680 5990759 11981518 17972277 23963036 29953795 35944554 47926072 53916831 59907590 71889108 77879867 89861385 107833662 119815180 143778216 155759734 179722770 215667324 233639601 239630360 269584155 311519468 359445540 389399335 431334648 467279202 539168310 623038936 700918803 718891080 778798670 934558404 1078336620 1168198005 1401837606 1557597340 1869116808 2156673240 2336396010 2803675212 3115194680 3504594015 4672792020 5607350424 7009188030 9345584040 14018376060 28036752120