Search a number
-
+
68412045 = 3513226987
BaseRepresentation
bin1000001001111…
…10001010001101
311202201200200110
410010332022031
5120003141140
610442150233
71460331012
oct404761215
9152650613
1068412045
1135686a89
121aab2379
1311233b00
14912b709
156015380
hex413e28d

68412045 has 24 divisors (see below), whose sum is σ = 118531296. Its totient is φ = 33678528.

The previous prime is 68412031. The next prime is 68412059. The reversal of 68412045 is 54021486.

It is an interprime number because it is at equal distance from previous prime (68412031) and next prime (68412059).

It is not a de Polignac number, because 68412045 - 28 = 68411789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10959 + ... + 16028.

It is an arithmetic number, because the mean of its divisors is an integer number (4938804).

Almost surely, 268412045 is an apocalyptic number.

68412045 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68412045 is a deficient number, since it is larger than the sum of its proper divisors (50119251).

68412045 is a wasteful number, since it uses less digits than its factorization.

68412045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27021 (or 27008 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 68412045 is about 8271.1574159848. The cubic root of 68412045 is about 408.9882748814.

The spelling of 68412045 in words is "sixty-eight million, four hundred twelve thousand, forty-five".

Divisors: 1 3 5 13 15 39 65 169 195 507 845 2535 26987 80961 134935 350831 404805 1052493 1754155 4560803 5262465 13682409 22804015 68412045