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444420230 = 25421105563
BaseRepresentation
bin11010011111010…
…101000010000110
31010222020212221112
4122133111002012
51402232421410
6112033245022
714004336542
oct3237250206
91128225845
10444420230
11208955551
12104a03772
13710c5067
1443048a22
152903a105
hex1a7d5086

444420230 has 16 divisors (see below), whose sum is σ = 801864144. Its totient is φ = 177344160.

The previous prime is 444420199. The next prime is 444420257. The reversal of 444420230 is 32024444.

It is a super-3 number, since 3×4444202303 (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 444420196 and 444420205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48572 + ... + 56991.

It is an arithmetic number, because the mean of its divisors is an integer number (50116509).

Almost surely, 2444420230 is an apocalyptic number.

444420230 is a deficient number, since it is larger than the sum of its proper divisors (357443914).

444420230 is a wasteful number, since it uses less digits than its factorization.

444420230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105991.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 444420230 is about 21081.2767639913. The cubic root of 444420230 is about 763.1289688075.

Adding to 444420230 its reverse (32024444), we get a palindrome (476444674).

The spelling of 444420230 in words is "four hundred forty-four million, four hundred twenty thousand, two hundred thirty".

Divisors: 1 2 5 10 421 842 2105 4210 105563 211126 527815 1055630 44442023 88884046 222210115 444420230