Search a number
-
+
80304980 = 22571035569
BaseRepresentation
bin1001100100101…
…01101101010100
312121002220201112
410302111231110
5131024224410
611545114152
71663403210
oct462255524
9177086645
1080304980
114136a358
1222a88958
1313839152
14a945940
1570b4105
hex4c95b54

80304980 has 48 divisors (see below), whose sum is σ = 194638080. Its totient is φ = 27260928.

The previous prime is 80304947. The next prime is 80305007. The reversal of 80304980 is 8940308.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11636 + ... + 17204.

It is an arithmetic number, because the mean of its divisors is an integer number (4054960).

Almost surely, 280304980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80304980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97319040).

80304980 is an abundant number, since it is smaller than the sum of its proper divisors (114333100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80304980 is a wasteful number, since it uses less digits than its factorization.

80304980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5688 (or 5686 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 80304980 is about 8961.3045925245. The cubic root of 80304980 is about 431.4337932541.

The spelling of 80304980 in words is "eighty million, three hundred four thousand, nine hundred eighty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 103 140 206 412 515 721 1030 1442 2060 2884 3605 5569 7210 11138 14420 22276 27845 38983 55690 77966 111380 155932 194915 389830 573607 779660 1147214 2294428 2868035 4015249 5736070 8030498 11472140 16060996 20076245 40152490 80304980