Search a number
-
+
68030787 = 31117121267
BaseRepresentation
bin1000000111000…
…01000101000011
311202000022200210
410003201011003
5114403441122
610430045203
71454152326
oct403410503
9152008623
1068030787
11354465a0
121a949803
131112c406
14906c7bd
155e8c40c
hex40e1143

68030787 has 16 divisors (see below), whose sum is σ = 104775552. Its totient is φ = 38805120.

The previous prime is 68030759. The next prime is 68030801. The reversal of 68030787 is 78703086.

It is not a de Polignac number, because 68030787 - 211 = 68028739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68030587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60073 + ... + 61194.

It is an arithmetic number, because the mean of its divisors is an integer number (6548472).

Almost surely, 268030787 is an apocalyptic number.

68030787 is a deficient number, since it is larger than the sum of its proper divisors (36744765).

68030787 is a wasteful number, since it uses less digits than its factorization.

68030787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121298.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 68030787 is about 8248.0777760639. The cubic root of 68030787 is about 408.2270998760.

The spelling of 68030787 in words is "sixty-eight million, thirty thousand, seven hundred eighty-seven".

Divisors: 1 3 11 17 33 51 187 561 121267 363801 1333937 2061539 4001811 6184617 22676929 68030787