Search a number
-
+
30980446 = 27345161
BaseRepresentation
bin111011000101…
…1100101011110
32011021222011221
41312023211132
530412333241
63024003554
7524221000
oct166134536
964258157
1030980446
1116540082
12a4605ba
136559333
144186370
152abe5d1
hex1d8b95e

30980446 has 16 divisors (see below), whose sum is σ = 54194400. Its totient is φ = 13277040.

The previous prime is 30980413. The next prime is 30980447. The reversal of 30980446 is 64408903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30980447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21895 + ... + 23266.

It is an arithmetic number, because the mean of its divisors is an integer number (3387150).

Almost surely, 230980446 is an apocalyptic number.

30980446 is a deficient number, since it is larger than the sum of its proper divisors (23213954).

30980446 is an equidigital number, since it uses as much as digits as its factorization.

30980446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45184 (or 45170 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 30980446 is about 5566.0080847947. The cubic root of 30980446 is about 314.0720012851.

The spelling of 30980446 in words is "thirty million, nine hundred eighty thousand, four hundred forty-six".

Divisors: 1 2 7 14 49 98 343 686 45161 90322 316127 632254 2212889 4425778 15490223 30980446