Search a number
-
+
68385758 = 276180077
BaseRepresentation
bin1000001001101…
…11101111011110
311202200100121212
410010313233132
5120001321013
610441424422
71460161250
oct404675736
9152610555
1068385758
1135669261
121aa9b112
1311224b5c
149121cd0
15600c6a8
hex4137bde

68385758 has 16 divisors (see below), whose sum is σ = 119156064. Its totient is φ = 28827360.

The previous prime is 68385749. The next prime is 68385763. The reversal of 68385758 is 85758386.

It is a super-2 number, since 2×683857582 = 9353223794469128, which contains 22 as substring.

It is a congruent number.

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, 39185 + ... + 40892.

It is an arithmetic number, because the mean of its divisors is an integer number (7447254).

Almost surely, 268385758 is an apocalyptic number.

68385758 is a deficient number, since it is larger than the sum of its proper divisors (50770306).

68385758 is a wasteful number, since it uses less digits than its factorization.

68385758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80147.

The product of its digits is 1612800, while the sum is 50.

The square root of 68385758 is about 8269.5681870337. The cubic root of 68385758 is about 408.9358842432.

The spelling of 68385758 in words is "sixty-eight million, three hundred eighty-five thousand, seven hundred fifty-eight".

Divisors: 1 2 7 14 61 122 427 854 80077 160154 560539 1121078 4884697 9769394 34192879 68385758