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68171052 = 2235680921
BaseRepresentation
bin1000001000000…
…11010100101100
311202021110002210
410010003110230
5114422433202
610433050420
71455305265
oct404032454
9152243083
1068171052
1135531a14
121a9b6a10
131117b201
1490a796c
155eb8c6c
hex410352c

68171052 has 12 divisors (see below), whose sum is σ = 159065816. Its totient is φ = 22723680.

The previous prime is 68171029. The next prime is 68171053. The reversal of 68171052 is 25017186.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (68171053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840449 + ... + 2840472.

Almost surely, 268171052 is an apocalyptic number.

It is an amenable number.

68171052 is an abundant number, since it is smaller than the sum of its proper divisors (90894764).

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

68171052 is a wasteful number, since it uses less digits than its factorization.

68171052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5680928 (or 5680926 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 68171052 is about 8256.5762880264. The cubic root of 68171052 is about 408.5074664036.

The spelling of 68171052 in words is "sixty-eight million, one hundred seventy-one thousand, fifty-two".

Divisors: 1 2 3 4 6 12 5680921 11361842 17042763 22723684 34085526 68171052