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19250028 = 2233725463
BaseRepresentation
bin100100101101…
…1101101101100
31100020000002000
41021123231230
514412000103
61524332300
7322423350
oct111335554
940200060
1019250028
11a958916
126544090
133cacc65
1427b1460
151a53aa3
hex125bb6c

19250028 has 48 divisors (see below), whose sum is σ = 57039360. Its totient is φ = 5499792.

The previous prime is 19250003. The next prime is 19250041. The reversal of 19250028 is 82005291.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 19249983 and 19250010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11976 + ... + 13487.

It is an arithmetic number, because the mean of its divisors is an integer number (1188320).

Almost surely, 219250028 is an apocalyptic number.

19250028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19250028 is an abundant number, since it is smaller than the sum of its proper divisors (37789332).

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

19250028 is a wasteful number, since it uses less digits than its factorization.

19250028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25483 (or 25475 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 19250028 is about 4387.4853845910. The cubic root of 19250028 is about 268.0055504902.

It can be divided in two parts, 19 and 250028, that added together give a cube (250047 = 633).

The spelling of 19250028 in words is "nineteen million, two hundred fifty thousand, twenty-eight".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 252 378 756 25463 50926 76389 101852 152778 178241 229167 305556 356482 458334 534723 687501 712964 916668 1069446 1375002 1604169 2138892 2750004 3208338 4812507 6416676 9625014 19250028