Search a number
-
+
30230451 = 327147309
BaseRepresentation
bin111001101010…
…0011110110011
32002212212101100
41303110132303
530214333301
62555535443
7514645266
oct163243663
962785340
1030230451
1116078649
12a15a583
136355b54
14402ccdd
1529c2286
hex1cd47b3

30230451 has 12 divisors (see below), whose sum is σ = 44282160. Its totient is φ = 19869360.

The previous prime is 30230449. The next prime is 30230491. The reversal of 30230451 is 15403203.

It is not a de Polignac number, because 30230451 - 21 = 30230449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30230491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23016 + ... + 24293.

It is an arithmetic number, because the mean of its divisors is an integer number (3690180).

Almost surely, 230230451 is an apocalyptic number.

30230451 is a deficient number, since it is larger than the sum of its proper divisors (14051709).

30230451 is a wasteful number, since it uses less digits than its factorization.

30230451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47386 (or 47383 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30230451 is about 5498.2225309640. Note that the first 3 decimals coincide. The cubic root of 30230451 is about 311.5168495859.

Adding to 30230451 its reverse (15403203), we get a palindrome (45633654).

The spelling of 30230451 in words is "thirty million, two hundred thirty thousand, four hundred fifty-one".

Divisors: 1 3 9 71 213 639 47309 141927 425781 3358939 10076817 30230451