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145230306 = 23131861927
BaseRepresentation
bin10001010100000…
…00100111100010
3101010021110112020
420222000213202
5244134332211
622224442310
73412302654
oct1052004742
9333243466
10145230306
1174a84751
1240779396
132411bbc0
14154066d4
15cb3b306
hex8a809e2

145230306 has 16 divisors (see below), whose sum is σ = 312803904. Its totient is φ = 44686224.

The previous prime is 145230299. The next prime is 145230317. The reversal of 145230306 is 603032541.

It is a happy number.

It is a Curzon 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, 930886 + ... + 931041.

It is an arithmetic number, because the mean of its divisors is an integer number (19550244).

Almost surely, 2145230306 is an apocalyptic number.

145230306 is an abundant number, since it is smaller than the sum of its proper divisors (167573598).

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

145230306 is a wasteful number, since it uses less digits than its factorization.

145230306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861945.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 145230306 is about 12051.1537207024. The cubic root of 145230306 is about 525.6367855912.

Adding to 145230306 its reverse (603032541), we get a palindrome (748262847).

The spelling of 145230306 in words is "one hundred forty-five million, two hundred thirty thousand, three hundred six".

Divisors: 1 2 3 6 13 26 39 78 1861927 3723854 5585781 11171562 24205051 48410102 72615153 145230306