Search a number
-
+
68488093 = 263260411
BaseRepresentation
bin1000001010100…
…00101110011101
311202212120000001
410011100232131
5120013104333
610443534301
71461065512
oct405205635
9152776001
1068488093
1135729133
121ab2a391
131125c5cb
14914b309
15602cb7d
hex4150b9d

68488093 has 4 divisors (see below), whose sum is σ = 68748768. Its totient is φ = 68227420.

The previous prime is 68488051. The next prime is 68488097. The reversal of 68488093 is 39088486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39088486 = 219544243.

It is a cyclic number.

It is not a de Polignac number, because 68488093 - 29 = 68487581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68488097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129943 + ... + 130468.

It is an arithmetic number, because the mean of its divisors is an integer number (17187192).

Almost surely, 268488093 is an apocalyptic number.

It is an amenable number.

68488093 is a deficient number, since it is larger than the sum of its proper divisors (260675).

68488093 is a wasteful number, since it uses less digits than its factorization.

68488093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260674.

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 68488093 is about 8275.7533191849. The cubic root of 68488093 is about 409.1397648842.

It can be divided in two parts, 6848 and 8093, that added together give a palindrome (14941).

The spelling of 68488093 in words is "sixty-eight million, four hundred eighty-eight thousand, ninety-three".

Divisors: 1 263 260411 68488093