Search a number
-
+
80320874 = 2230917393
BaseRepresentation
bin1001100100110…
…01100101101010
312121010201112012
410302121211222
5131030231444
611545315522
71663500434
oct462314552
9177121465
1080320874
1141380297
1222a95ba2
131384345a
14a94b654
1570b8b9e
hex4c9996a

80320874 has 8 divisors (see below), whose sum is σ = 120540420. Its totient is φ = 40140736.

The previous prime is 80320871. The next prime is 80320879. The reversal of 80320874 is 47802308.

It can be written as a sum of positive squares in 2 ways, for example, as 80227849 + 93025 = 8957^2 + 305^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80320874.

It is not an unprimeable number, because it can be changed into a prime (80320871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079 + ... + 13314.

Almost surely, 280320874 is an apocalyptic number.

80320874 is a deficient number, since it is larger than the sum of its proper divisors (40219546).

80320874 is a wasteful number, since it uses less digits than its factorization.

80320874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19704.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 80320874 is about 8962.1913614919. The cubic root of 80320874 is about 431.4622545707.

The spelling of 80320874 in words is "eighty million, three hundred twenty thousand, eight hundred seventy-four".

Divisors: 1 2 2309 4618 17393 34786 40160437 80320874