Search a number
-
+
30380361 = 3114611997
BaseRepresentation
bin111001111100…
…1000101001001
32010011111000120
41303321011021
530234132421
63003053453
7516141324
oct163710511
963144016
1030380361
1116170240
12a211289
1363a915b
14406b7bb
152a018c6
hex1cf9149

30380361 has 16 divisors (see below), whose sum is σ = 44307648. Its totient is φ = 18363200.

The previous prime is 30380359. The next prime is 30380369. The reversal of 30380361 is 16308303.

It is a cyclic number.

It is not a de Polignac number, because 30380361 - 21 = 30380359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30380369) 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 15 ways as a sum of consecutive naturals, for example, 14215 + ... + 16211.

It is an arithmetic number, because the mean of its divisors is an integer number (2769228).

Almost surely, 230380361 is an apocalyptic number.

It is an amenable number.

30380361 is a deficient number, since it is larger than the sum of its proper divisors (13927287).

30380361 is a wasteful number, since it uses less digits than its factorization.

30380361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30380361 is about 5511.8382596009. The cubic root of 30380361 is about 312.0309284757.

Adding to 30380361 its reverse (16308303), we get a palindrome (46688664).

The spelling of 30380361 in words is "thirty million, three hundred eighty thousand, three hundred sixty-one".

Divisors: 1 3 11 33 461 1383 1997 5071 5991 15213 21967 65901 920617 2761851 10126787 30380361