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68444 = 2271241
BaseRepresentation
bin10000101101011100
310110212222
4100231130
54142234
61244512
7403355
oct205534
9113788
1068444
1147472
1233738
13251cc
141ad2c
151542e
hex10b5c

68444 has 12 divisors (see below), whose sum is σ = 121968. Its totient is φ = 33600.

The previous prime is 68443. The next prime is 68447. The reversal of 68444 is 44486.

It is a super-2 number, since 2×684442 = 9369162272, which contains 22 as substring.

68444 is a modest number, since divided by 444 gives 68 as remainder.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68443) 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, 164 + ... + 404.

It is an arithmetic number, because the mean of its divisors is an integer number (10164).

268444 is an apocalyptic number.

It is an amenable number.

68444 is a deficient number, since it is larger than the sum of its proper divisors (53524).

68444 is a wasteful number, since it uses less digits than its factorization.

68444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 314 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 68444 is about 261.6180421913. The cubic root of 68444 is about 40.9051943913.

It can be divided in two parts, 68 and 444, that added together give a 9-th power (512 = 29).

The spelling of 68444 in words is "sixty-eight thousand, four hundred forty-four".

Divisors: 1 2 4 71 142 241 284 482 964 17111 34222 68444