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1028071133 = 19431258349
BaseRepresentation
bin111101010001110…
…001111011011101
32122122111102110122
4331101301323131
54101141234013
6250003044325
734322313635
oct7521617335
92578442418
101028071133
11488357071
122483706a5
13134cb821b
149a7776c5
15603c8a08
hex3d471edd

1028071133 has 8 divisors (see below), whose sum is σ = 1107348000. Its totient is φ = 951311088.

The previous prime is 1028071063. The next prime is 1028071183. The reversal of 1028071133 is 3311708201.

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 1028071133 - 28 = 1028070877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028071183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628358 + ... + 629991.

It is an arithmetic number, because the mean of its divisors is an integer number (138418500).

Almost surely, 21028071133 is an apocalyptic number.

It is an amenable number.

1028071133 is a deficient number, since it is larger than the sum of its proper divisors (79276867).

1028071133 is a wasteful number, since it uses less digits than its factorization.

1028071133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1258411.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1028071133 is about 32063.5483532313. The cubic root of 1028071133 is about 1009.2708304324.

Adding to 1028071133 its reverse (3311708201), we get a palindrome (4339779334).

The spelling of 1028071133 in words is "one billion, twenty-eight million, seventy-one thousand, one hundred thirty-three".

Divisors: 1 19 43 817 1258349 23908631 54109007 1028071133