Search a number
-
+
78605043 = 3112381971
BaseRepresentation
bin1001010111101…
…10101011110011
312110220112211220
410223312223303
5130110330133
611444440123
71643063136
oct453665363
9173815756
1078605043
1140409150
12223a9043
131339247a
14a62221d
156d7a5b3
hex4af6af3

78605043 has 8 divisors (see below), whose sum is σ = 114334656. Its totient is φ = 47639400.

The previous prime is 78605041. The next prime is 78605069. The reversal of 78605043 is 34050687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78605043 - 21 = 78605041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2381971 = 78605043 / (7 + 8 + 6 + 0 + 5 + 0 + 4 + 3).

It is a junction number, because it is equal to n+sod(n) for n = 78604995 and 78605013.

It is not an unprimeable number, because it can be changed into a prime (78605041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190953 + ... + 1191018.

It is an arithmetic number, because the mean of its divisors is an integer number (14291832).

Almost surely, 278605043 is an apocalyptic number.

78605043 is a deficient number, since it is larger than the sum of its proper divisors (35729613).

78605043 is a wasteful number, since it uses less digits than its factorization.

78605043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381985.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 78605043 is about 8865.9485110167. The cubic root of 78605043 is about 428.3677855207.

The spelling of 78605043 in words is "seventy-eight million, six hundred five thousand, forty-three".

Divisors: 1 3 11 33 2381971 7145913 26201681 78605043