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68993200 = 24521371259
BaseRepresentation
bin1000001110011…
…00000010110000
311210211012212201
410013030002300
5120130240300
610502432544
71465301233
oct407140260
9153735781
1068993200
1135a43681
121b132754
13113a84a3
14923d41a
1560cc66a
hex41cc0b0

68993200 has 60 divisors (see below), whose sum is σ = 167098680. Its totient is φ = 27374080.

The previous prime is 68993159. The next prime is 68993209. The reversal of 68993200 is 239986.

It is a self number, because there is not a number n which added to its sum of digits gives 68993200.

It is not an unprimeable number, because it can be changed into a prime (68993209) 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, 54171 + ... + 55429.

It is an arithmetic number, because the mean of its divisors is an integer number (2784978).

Almost surely, 268993200 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 68993200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83549340).

68993200 is an abundant number, since it is smaller than the sum of its proper divisors (98105480).

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

68993200 is a wasteful number, since it uses less digits than its factorization.

68993200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1403 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 68993200 is about 8306.2145409326. The cubic root of 68993200 is about 410.1431187844.

The spelling of 68993200 in words is "sixty-eight million, nine hundred ninety-three thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 137 200 274 400 548 685 1096 1259 1370 2192 2518 2740 3425 5036 5480 6295 6850 10072 10960 12590 13700 20144 25180 27400 31475 50360 54800 62950 100720 125900 172483 251800 344966 503600 689932 862415 1379864 1724830 2759728 3449660 4312075 6899320 8624150 13798640 17248300 34496600 68993200