Search a number
-
+
30208325 = 527172619
BaseRepresentation
bin111001100111…
…1000101000101
32002211202000212
41303033011011
530213131300
62555245205
7514523630
oct163170505
962752025
1030208325
1116062a64
12a149805
136348a64
144024c17
1529ba935
hex1ccf145

30208325 has 12 divisors (see below), whose sum is σ = 42809760. Its totient is φ = 20714160.

The previous prime is 30208319. The next prime is 30208333. The reversal of 30208325 is 52380203.

It is not a de Polignac number, because 30208325 - 26 = 30208261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30208325.

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 11 ways as a sum of consecutive naturals, for example, 86135 + ... + 86484.

It is an arithmetic number, because the mean of its divisors is an integer number (3567480).

Almost surely, 230208325 is an apocalyptic number.

30208325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

30208325 is a deficient number, since it is larger than the sum of its proper divisors (12601435).

30208325 is a wasteful number, since it uses less digits than its factorization.

30208325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172636 (or 172631 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30208325 is about 5496.2100578490. The cubic root of 30208325 is about 311.4408301654.

Adding to 30208325 its reverse (52380203), we get a palindrome (82588528).

The spelling of 30208325 in words is "thirty million, two hundred eight thousand, three hundred twenty-five".

Divisors: 1 5 7 25 35 175 172619 863095 1208333 4315475 6041665 30208325