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28395950 = 25211173037
BaseRepresentation
bin110110001010…
…0100110101110
31222102122220212
41230110212232
524232132300
62452342422
7463235012
oct154244656
958378825
1028395950
1115035330
129614a12
135b62b4b
143ab2542
15275d935
hex1b149ae

28395950 has 48 divisors (see below), whose sum is σ = 61027344. Its totient is φ = 9715200.

The previous prime is 28395949. The next prime is 28395971. The reversal of 28395950 is 5959382.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28395898 and 28395907.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7832 + ... + 10868.

It is an arithmetic number, because the mean of its divisors is an integer number (1271403).

Almost surely, 228395950 is an apocalyptic number.

28395950 is an abundant number, since it is smaller than the sum of its proper divisors (32631394).

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

28395950 is a wasteful number, since it uses less digits than its factorization.

28395950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077 (or 3072 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 28395950 is about 5328.7850397628. The cubic root of 28395950 is about 305.0835567898.

The spelling of 28395950 in words is "twenty-eight million, three hundred ninety-five thousand, nine hundred fifty".

Divisors: 1 2 5 10 11 17 22 25 34 50 55 85 110 170 187 275 374 425 550 850 935 1870 3037 4675 6074 9350 15185 30370 33407 51629 66814 75925 103258 151850 167035 258145 334070 516290 567919 835175 1135838 1290725 1670350 2581450 2839595 5679190 14197975 28395950