Search a number
-
+
30485353 = 61749409
BaseRepresentation
bin111010001001…
…0101101101001
32010100211001011
41310102231221
530301012403
63005223521
7520056403
oct164225551
963324034
1030485353
1116232108
12a261ba1
136414b92
144097b73
152a22a6d
hex1d12b69

30485353 has 4 divisors (see below), whose sum is σ = 30535380. Its totient is φ = 30435328.

The previous prime is 30485347. The next prime is 30485381. The reversal of 30485353 is 35358403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35358403 = 139254377.

It can be written as a sum of positive squares in 2 ways, for example, as 5053504 + 25431849 = 2248^2 + 5043^2 .

It is a cyclic number.

It is not a de Polignac number, because 30485353 - 29 = 30484841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30485333) 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, 24088 + ... + 25321.

It is an arithmetic number, because the mean of its divisors is an integer number (7633845).

Almost surely, 230485353 is an apocalyptic number.

It is an amenable number.

30485353 is a deficient number, since it is larger than the sum of its proper divisors (50027).

30485353 is an equidigital number, since it uses as much as digits as its factorization.

30485353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50026.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 30485353 is about 5521.3542722778. The cubic root of 30485353 is about 312.3899661674.

The spelling of 30485353 in words is "thirty million, four hundred eighty-five thousand, three hundred fifty-three".

Divisors: 1 617 49409 30485353