Search a number
-
+
230532020 = 22529397469
BaseRepresentation
bin11011011110110…
…10001110110100
3121001210020110222
431233122032310
5433004011040
634513033512
75466330005
oct1557321664
9531706428
10230532020
11109147134
1265255898
13389b74a4
142288d1ac
151538abb5
hexdbda3b4

230532020 has 24 divisors (see below), whose sum is σ = 500812200. Its totient is φ = 89032832.

The previous prime is 230532017. The next prime is 230532023. The reversal of 230532020 is 20235032.

230532020 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (230532017) and next prime (230532023).

It can be written as a sum of positive squares in 4 ways, for example, as 27583504 + 202948516 = 5252^2 + 14246^2 .

230532020 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 230532020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230532023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198155 + ... + 199314.

It is an arithmetic number, because the mean of its divisors is an integer number (20867175).

Almost surely, 2230532020 is an apocalyptic number.

230532020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230532020 is an abundant number, since it is smaller than the sum of its proper divisors (270280180).

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

230532020 is a wasteful number, since it uses less digits than its factorization.

230532020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397507 (or 397505 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 230532020 is about 15183.2809366092. The cubic root of 230532020 is about 613.1646163479.

Adding to 230532020 its reverse (20235032), we get a palindrome (250767052).

The spelling of 230532020 in words is "two hundred thirty million, five hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 397469 794938 1589876 1987345 3974690 7949380 11526601 23053202 46106404 57633005 115266010 230532020