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68938500 = 2235345959
BaseRepresentation
bin1000001101111…
…10101100000100
311210201102211210
410012332230010
5120122013000
610501331420
71464652611
oct406765404
9153642753
1068938500
1135a06574
121b106b70
1311389617
149227508
1560bb350
hex41beb04

68938500 has 48 divisors (see below), whose sum is σ = 200753280. Its totient is φ = 18383200.

The previous prime is 68938487. The next prime is 68938501. The reversal of 68938500 is 583986.

It is not an unprimeable number, because it can be changed into a prime (68938501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21480 + ... + 24479.

It is an arithmetic number, because the mean of its divisors is an integer number (4182360).

Almost surely, 268938500 is an apocalyptic number.

68938500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68938500 is an abundant number, since it is smaller than the sum of its proper divisors (131814780).

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

68938500 is a wasteful number, since it uses less digits than its factorization.

68938500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45981 (or 45969 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 68938500 is about 8302.9211726958. The cubic root of 68938500 is about 410.0346986299.

The spelling of 68938500 in words is "sixty-eight million, nine hundred thirty-eight thousand, five hundred".

Divisors: 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 125 150 250 300 375 500 750 1500 45959 91918 137877 183836 229795 275754 459590 551508 689385 919180 1148975 1378770 2297950 2757540 3446925 4595900 5744875 6893850 11489750 13787700 17234625 22979500 34469250 68938500