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68180044 = 22292572287
BaseRepresentation
bin1000001000001…
…01100001001100
311202021220102211
410010011201030
5114423230134
610433200204
71455343432
oct404054114
9152256384
1068180044
1135538749
121aa00064
131118232a
1490aad52
155ebb764
hex410584c

68180044 has 24 divisors (see below), whose sum is σ = 123963840. Its totient is φ = 32772096.

The previous prime is 68180017. The next prime is 68180053. The reversal of 68180044 is 44008186.

It is a junction number, because it is equal to n+sod(n) for n = 68179988 and 68180015.

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, 28669 + ... + 30955.

It is an arithmetic number, because the mean of its divisors is an integer number (5165160).

Almost surely, 268180044 is an apocalyptic number.

It is an amenable number.

68180044 is a deficient number, since it is larger than the sum of its proper divisors (55783796).

68180044 is a wasteful number, since it uses less digits than its factorization.

68180044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2575 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 68180044 is about 8257.1208057046. The cubic root of 68180044 is about 408.5254268014.

The spelling of 68180044 in words is "sixty-eight million, one hundred eighty thousand, forty-four".

Divisors: 1 2 4 29 58 116 257 514 1028 2287 4574 7453 9148 14906 29812 66323 132646 265292 587759 1175518 2351036 17045011 34090022 68180044