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145930230 = 23252336959
BaseRepresentation
bin10001011001010…
…11011111110110
3101011121000122100
420230223133312
5244324231410
622251442530
73421246365
oct1054533766
9334530570
10145930230
11754125a6
1240a56446
1324305664
14155497dc
15cc288c0
hex8b2b7f6

145930230 has 48 divisors (see below), whose sum is σ = 381101760. Its totient is φ = 38742144.

The previous prime is 145930229. The next prime is 145930243. The reversal of 145930230 is 32039541.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 145930194 and 145930203.

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 23 ways as a sum of consecutive naturals, for example, 17491 + ... + 24449.

It is an arithmetic number, because the mean of its divisors is an integer number (7939620).

Almost surely, 2145930230 is an apocalyptic number.

145930230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145930230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190550880).

145930230 is an abundant number, since it is smaller than the sum of its proper divisors (235171530).

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

145930230 is a wasteful number, since it uses less digits than its factorization.

145930230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7205 (or 7202 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 145930230 is about 12080.1585254499. The cubic root of 145930230 is about 526.4798519358.

Adding to 145930230 its reverse (32039541), we get a palindrome (177969771).

The spelling of 145930230 in words is "one hundred forty-five million, nine hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 233 466 699 1165 1398 2097 2330 3495 4194 6959 6990 10485 13918 20877 20970 34795 41754 62631 69590 104385 125262 208770 313155 626310 1621447 3242894 4864341 8107235 9728682 14593023 16214470 24321705 29186046 48643410 72965115 145930230