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230451444 = 223223212101
BaseRepresentation
bin11011011110001…
…10100011110100
3121001122010221200
431233012203310
5432443421234
634511212500
75465543046
oct1557064364
9531563850
10230451444
111090a1643
1265217130
1338989902
142286ba96
1515371d99
hexdbc68f4

230451444 has 54 divisors (see below), whose sum is σ = 609008946. Its totient is φ = 73471200.

The previous prime is 230451443. The next prime is 230451449. The reversal of 230451444 is 444154032.

It is a happy number.

230451444 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 only one way, i.e., 230432400 + 19044 = 15180^2 + 138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230451443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12994 + ... + 25094.

Almost surely, 2230451444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 230451444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304504473).

230451444 is an abundant number, since it is smaller than the sum of its proper divisors (378557502).

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

230451444 is a wasteful number, since it uses less digits than its factorization.

230451444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12157 (or 12129 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 230451444 is about 15180.6272597676. The cubic root of 230451444 is about 613.0931698601.

The spelling of 230451444 in words is "two hundred thirty million, four hundred fifty-one thousand, four hundred forty-four".

Divisors: 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 276 414 529 828 1058 1587 2116 3174 4761 6348 9522 12101 19044 24202 36303 48404 72606 108909 145212 217818 278323 435636 556646 834969 1113292 1669938 2504907 3339876 5009814 6401429 10019628 12802858 19204287 25605716 38408574 57612861 76817148 115225722 230451444