Search a number
-
+
78080223 = 3134874111
BaseRepresentation
bin1001010011101…
…10100011011111
312102220212221010
410221312203133
5124442031343
611425310303
71635446064
oct451664337
9172825833
1078080223
114008a911
1222195393
131323a620
14a526c6b
156cc4d33
hex4a768df

78080223 has 16 divisors (see below), whose sum is σ = 112372736. Its totient is φ = 47939040.

The previous prime is 78080213. The next prime is 78080257. The reversal of 78080223 is 32208087.

It is not a de Polignac number, because 78080223 - 26 = 78080159 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 (78080213) 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, 16938 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (7023296).

Almost surely, 278080223 is an apocalyptic number.

78080223 is a deficient number, since it is larger than the sum of its proper divisors (34292513).

78080223 is a wasteful number, since it uses less digits than its factorization.

78080223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 78080223 is about 8836.3014321604. The cubic root of 78080223 is about 427.4122989617.

It can be divided in two parts, 780 and 80223, that added together give a triangular number (81003 = T402).

The spelling of 78080223 in words is "seventy-eight million, eighty thousand, two hundred twenty-three".

Divisors: 1 3 13 39 487 1461 4111 6331 12333 18993 53443 160329 2002057 6006171 26026741 78080223