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68134736 = 2417872383
BaseRepresentation
bin1000000111110…
…10011101010000
311202012121021202
410003322131100
5114420302421
610432210332
71455064355
oct403723520
9152177252
1068134736
11355076aa
121a9999a8
1311167817
14909862c
155ead10b
hex40fa750

68134736 has 20 divisors (see below), whose sum is σ = 132140352. Its totient is φ = 34034016.

The previous prime is 68134721. The next prime is 68134757. The reversal of 68134736 is 63743186.

It is a self number, because there is not a number n which added to its sum of digits gives 68134736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27401 + ... + 29783.

Almost surely, 268134736 is an apocalyptic number.

68134736 is the 4766-th octagonal number.

It is an amenable number.

68134736 is a deficient number, since it is larger than the sum of its proper divisors (64005616).

68134736 is a wasteful number, since it uses less digits than its factorization.

68134736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178 (or 4172 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 68134736 is about 8254.3767784128. The cubic root of 68134736 is about 408.4349136516.

The spelling of 68134736 in words is "sixty-eight million, one hundred thirty-four thousand, seven hundred thirty-six".

Divisors: 1 2 4 8 16 1787 2383 3574 4766 7148 9532 14296 19064 28592 38128 4258421 8516842 17033684 34067368 68134736