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304146093 = 3101382031
BaseRepresentation
bin10010001000001…
…110011010101101
3210012022020000010
4102020032122231
51110330133333
650102523433
710352125206
oct2210163255
9705266003
10304146093
11146756509
1285a36579
134b020004
142c5725ad
151ba7c563
hex1220e6ad

304146093 has 4 divisors (see below), whose sum is σ = 405528128. Its totient is φ = 202764060.

The previous prime is 304146083. The next prime is 304146127. The reversal of 304146093 is 390641403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 390641403 = 3130213801.

It is not a de Polignac number, because 304146093 - 220 = 303097517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304146093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304146083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50691013 + ... + 50691018.

It is an arithmetic number, because the mean of its divisors is an integer number (101382032).

Almost surely, 2304146093 is an apocalyptic number.

It is an amenable number.

304146093 is a deficient number, since it is larger than the sum of its proper divisors (101382035).

304146093 is a wasteful number, since it uses less digits than its factorization.

304146093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101382034.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 304146093 is about 17439.7847750481. The cubic root of 304146093 is about 672.5027748719.

Adding to 304146093 its reverse (390641403), we get a palindrome (694787496).

The spelling of 304146093 in words is "three hundred four million, one hundred forty-six thousand, ninety-three".

Divisors: 1 3 101382031 304146093