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68845152 = 2531494813
BaseRepresentation
bin1000001101001…
…11111001100000
311210112200210110
410012213321200
5120111021102
610455331320
71464113505
oct406477140
9153480713
1068845152
1135952422
121b080b40
1311355c9c
1492014ac
15609d86c
hex41a7e60

68845152 has 48 divisors (see below), whose sum is σ = 181969200. Its totient is φ = 22789632.

The previous prime is 68845099. The next prime is 68845201. The reversal of 68845152 is 25154886.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68845152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11898 + ... + 16710.

It is an arithmetic number, because the mean of its divisors is an integer number (3791025).

Almost surely, 268845152 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 68845152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90984600).

68845152 is an abundant number, since it is smaller than the sum of its proper divisors (113124048).

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

68845152 is a wasteful number, since it uses less digits than its factorization.

68845152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4975 (or 4967 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 68845152 is about 8297.2978734043. The cubic root of 68845152 is about 409.8495422551.

The spelling of 68845152 in words is "sixty-eight million, eight hundred forty-five thousand, one hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 149 298 447 596 894 1192 1788 2384 3576 4768 4813 7152 9626 14304 14439 19252 28878 38504 57756 77008 115512 154016 231024 462048 717137 1434274 2151411 2868548 4302822 5737096 8605644 11474192 17211288 22948384 34422576 68845152