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230144144 = 2437388757
BaseRepresentation
bin11011011011110…
…11100010010000
3121001001112102012
431231323202100
5432404103034
634500442052
75463123116
oct1555734220
9531045365
10230144144
11108a0177a
12650a9328
13388aca89
14227cbab6
1515310cce
hexdb7b890

230144144 has 20 divisors (see below), whose sum is σ = 457956924. Its totient is φ = 111961728.

The previous prime is 230144137. The next prime is 230144153. The reversal of 230144144 is 441441032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 189337600 + 40806544 = 13760^2 + 6388^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193787 + ... + 194970.

Almost surely, 2230144144 is an apocalyptic number.

It is an amenable number.

230144144 is a deficient number, since it is larger than the sum of its proper divisors (227812780).

230144144 is a wasteful number, since it uses less digits than its factorization.

230144144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388802 (or 388796 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 230144144 is about 15170.5024307041. The cubic root of 230144144 is about 612.8205349349.

Adding to 230144144 its reverse (441441032), we get a palindrome (671585176).

The spelling of 230144144 in words is "two hundred thirty million, one hundred forty-four thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 37 74 148 296 592 388757 777514 1555028 3110056 6220112 14384009 28768018 57536036 115072072 230144144