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453128145 = 3530208543
BaseRepresentation
bin11011000000100…
…010111111010001
31011120122021221220
4123000202333101
51412000100040
6112544035253
714141345211
oct3300427721
91146567856
10453128145
11212862978
12107902b29
1372b53782
1444274241
1529baa2d0
hex1b022fd1

453128145 has 8 divisors (see below), whose sum is σ = 725005056. Its totient is φ = 241668336.

The previous prime is 453128141. The next prime is 453128173. The reversal of 453128145 is 541821354.

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

It is not a de Polignac number, because 453128145 - 22 = 453128141 is a prime.

It is a super-2 number, since 2×4531281452 = 410650231582282050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (453128141) 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, 15104257 + ... + 15104286.

It is an arithmetic number, because the mean of its divisors is an integer number (90625632).

Almost surely, 2453128145 is an apocalyptic number.

It is an amenable number.

453128145 is a deficient number, since it is larger than the sum of its proper divisors (271876911).

453128145 is a wasteful number, since it uses less digits than its factorization.

453128145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30208551.

The product of its digits is 19200, while the sum is 33.

The square root of 453128145 is about 21286.8068295834. The cubic root of 453128145 is about 768.0809834172.

Adding to 453128145 its reverse (541821354), we get a palindrome (994949499).

The spelling of 453128145 in words is "four hundred fifty-three million, one hundred twenty-eight thousand, one hundred forty-five".

Divisors: 1 3 5 15 30208543 90625629 151042715 453128145