Search a number
-
+
230303720 = 2355757593
BaseRepresentation
bin11011011101000…
…10011111101000
3121001100122022102
431232202133220
5432424204340
634504112532
75464356263
oct1556423750
9531318272
10230303720
11109000659
1265165748
13389375ba
142282dcda
1515343215
hexdba27e8

230303720 has 16 divisors (see below), whose sum is σ = 518183460. Its totient is φ = 92121472.

The previous prime is 230303707. The next prime is 230303729. The reversal of 230303720 is 27303032.

230303720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 229764964 + 538756 = 15158^2 + 734^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 230303692 and 230303701.

It is not an unprimeable number, because it can be changed into a prime (230303729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2878757 + ... + 2878836.

Almost surely, 2230303720 is an apocalyptic number.

230303720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230303720 is an abundant number, since it is smaller than the sum of its proper divisors (287879740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

230303720 is a wasteful number, since it uses less digits than its factorization.

230303720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5757604 (or 5757600 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 20.

The square root of 230303720 is about 15175.7609364407. The cubic root of 230303720 is about 612.9621401837.

Adding to 230303720 its reverse (27303032), we get a palindrome (257606752).

The spelling of 230303720 in words is "two hundred thirty million, three hundred three thousand, seven hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 5757593 11515186 23030372 28787965 46060744 57575930 115151860 230303720