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442430230 = 251113130703
BaseRepresentation
bin11010010111101…
…111001100010110
31010211111210011211
4122113233030112
51401230231410
6111522452034
713651411024
oct3227571426
91124453154
10442430230
11207816420
1210420401a
1370879348
1442a8b714
1528c9568a
hex1a5ef316

442430230 has 32 divisors (see below), whose sum is σ = 875432448. Its totient is φ = 159650400.

The previous prime is 442430213. The next prime is 442430251. The reversal of 442430230 is 32034244.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 942 + ... + 29761.

It is an arithmetic number, because the mean of its divisors is an integer number (27357264).

Almost surely, 2442430230 is an apocalyptic number.

442430230 is a deficient number, since it is larger than the sum of its proper divisors (433002218).

442430230 is a wasteful number, since it uses less digits than its factorization.

442430230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30852.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 442430230 is about 21034.0255300786. The cubic root of 442430230 is about 761.9882324244.

Adding to 442430230 its reverse (32034244), we get a palindrome (474464474).

The spelling of 442430230 in words is "four hundred forty-two million, four hundred thirty thousand, two hundred thirty".

Divisors: 1 2 5 10 11 22 55 110 131 262 655 1310 1441 2882 7205 14410 30703 61406 153515 307030 337733 675466 1688665 3377330 4022093 8044186 20110465 40220930 44243023 88486046 221215115 442430230