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68945200 = 24521710139
BaseRepresentation
bin1000001110000…
…00010100110000
311210201210000221
410013000110300
5120122221300
610501422424
71465011262
oct407002460
9153653027
1068945200
1135a10605
121b10aa14
131138c69c
149229b32
1560bd31a
hex41c0530

68945200 has 60 divisors (see below), whose sum is σ = 175401720. Its totient is φ = 25953280.

The previous prime is 68945159. The next prime is 68945203. The reversal of 68945200 is 254986.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (68945203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1731 + ... + 11869.

It is an arithmetic number, because the mean of its divisors is an integer number (2923362).

Almost surely, 268945200 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 68945200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87700860).

68945200 is an abundant number, since it is smaller than the sum of its proper divisors (106456520).

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

68945200 is a wasteful number, since it uses less digits than its factorization.

68945200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10174 (or 10163 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 68945200 is about 8303.3246353494. The cubic root of 68945200 is about 410.0479816937.

The spelling of 68945200 in words is "sixty-eight million, nine hundred forty-five thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 17 20 25 34 40 50 68 80 85 100 136 170 200 272 340 400 425 680 850 1360 1700 3400 6800 10139 20278 40556 50695 81112 101390 162224 172363 202780 253475 344726 405560 506950 689452 811120 861815 1013900 1378904 1723630 2027800 2757808 3447260 4055600 4309075 6894520 8618150 13789040 17236300 34472600 68945200