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28523233654100 = 22521965213230203
BaseRepresentation
bin1100111110001000101010…
…01101011011010101010100
310201222210110012021112111222
412133010111031123111110
512214311040303412400
6140355220451145512
76002510214512423
oct637042515332524
9121883405245458
1028523233654100
1190a76a9886999
123247bb12a5298
1312bb963623383
147087636712ba
15346e4c4e5185
hex19f11535b554

28523233654100 has 72 divisors (see below), whose sum is σ = 65154352667040. Its totient is φ = 10808591633280.

The previous prime is 28523233654057. The next prime is 28523233654103. The reversal of 28523233654100 is 145633232582.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28523233654103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123789599 + ... + 124019801.

It is an arithmetic number, because the mean of its divisors is an integer number (904921564820).

Almost surely, 228523233654100 is an apocalyptic number.

28523233654100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28523233654100 is an abundant number, since it is smaller than the sum of its proper divisors (36631119012940).

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

28523233654100 is a wasteful number, since it uses less digits than its factorization.

28523233654100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295449 (or 295442 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

Adding to 28523233654100 its reverse (145633232582), we get a palindrome (28668866886682).

The spelling of 28523233654100 in words is "twenty-eight trillion, five hundred twenty-three billion, two hundred thirty-three million, six hundred fifty-four thousand, one hundred".

Divisors: 1 2 4 5 10 19 20 25 38 50 76 95 100 190 380 475 950 1900 65213 130426 230203 260852 326065 460406 652130 920812 1151015 1239047 1304260 1630325 2302030 2478094 3260650 4373857 4604060 4956188 5755075 6195235 6521300 8747714 11510150 12390470 17495428 21869285 23020300 24780940 30976175 43738570 61952350 87477140 109346425 123904700 218692850 437385700 15012228239 30024456478 60048912956 75061141195 150122282390 285232336541 300244564780 375305705975 570464673082 750611411950 1140929346164 1426161682705 1501222823900 2852323365410 5704646730820 7130808413525 14261616827050 28523233654100