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68937500 = 22561103
BaseRepresentation
bin1000001101111…
…10011100011100
311210201101110202
410012332130130
5120122000000
610501323032
71464646652
oct406763434
9153641422
1068937500
1135a05845
121b106478
1311389028
149226dd2
1560badd5
hex41be71c

68937500 has 42 divisors (see below), whose sum is σ = 150935568. Its totient is φ = 27550000.

The previous prime is 68937493. The next prime is 68937527. The reversal of 68937500 is 573986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 61949 + ... + 63051.

It is an arithmetic number, because the mean of its divisors is an integer number (3593704).

Almost surely, 268937500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68937500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75467784).

68937500 is an abundant number, since it is smaller than the sum of its proper divisors (81998068).

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

68937500 is an equidigital number, since it uses as much as digits as its factorization.

68937500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 68937500 is about 8302.8609527078. The cubic root of 68937500 is about 410.0327160092.

The spelling of 68937500 in words is "sixty-eight million, nine hundred thirty-seven thousand, five hundred".

Divisors: 1 2 4 5 10 20 25 50 100 125 250 500 625 1103 1250 2206 2500 3125 4412 5515 6250 11030 12500 15625 22060 27575 31250 55150 62500 110300 137875 275750 551500 689375 1378750 2757500 3446875 6893750 13787500 17234375 34468750 68937500