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280230113 = 677158909
BaseRepresentation
bin10000101100111…
…111100011100001
3201112022011110002
4100230333203201
51033214330423
643450145345
76641626262
oct2054774341
9645264402
10280230113
11134201039
1279a22255
1346098347
1429308969
1519906228
hex10b3f8e1

280230113 has 8 divisors (see below), whose sum is σ = 288423360. Its totient is φ = 272154960.

The previous prime is 280230101. The next prime is 280230149. The reversal of 280230113 is 311032082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 280230113 - 224 = 263452897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280230913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24698 + ... + 34211.

It is an arithmetic number, because the mean of its divisors is an integer number (36052920).

Almost surely, 2280230113 is an apocalyptic number.

It is an amenable number.

280230113 is a deficient number, since it is larger than the sum of its proper divisors (8193247).

280230113 is an equidigital number, since it uses as much as digits as its factorization.

280230113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59047.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 280230113 is about 16740.0750595689. The cubic root of 280230113 is about 654.3924307935.

Adding to 280230113 its reverse (311032082), we get a palindrome (591262195).

The spelling of 280230113 in words is "two hundred eighty million, two hundred thirty thousand, one hundred thirteen".

Divisors: 1 67 71 4757 58909 3946903 4182539 280230113