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1028055280330 = 251312203648047
BaseRepresentation
bin11101111010111001101…
…11101010101011001010
310122021120221101022222201
432331130313222223022
5113320424122432310
62104140532310414
7134163111462151
oct16753467525312
93567527338881
101028055280330
11366aa544a291
121472b177240a
1375c397a0230
1437a884a6598
151bb1e79be3a
hexef5cdeaaca

1028055280330 has 32 divisors (see below), whose sum is σ = 1993012003584. Its totient is φ = 379557950016.

The previous prime is 1028055280327. The next prime is 1028055280363. The reversal of 1028055280330 is 330825508201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028055280330.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1262367 + ... + 1910413.

It is an arithmetic number, because the mean of its divisors is an integer number (62281625112).

Almost surely, 21028055280330 is an apocalyptic number.

1028055280330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028055280330 is a deficient number, since it is larger than the sum of its proper divisors (964956723254).

1028055280330 is a wasteful number, since it uses less digits than its factorization.

1028055280330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660270.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 1028055280330 in words is "one trillion, twenty-eight billion, fifty-five million, two hundred eighty thousand, three hundred thirty".

Divisors: 1 2 5 10 13 26 65 130 12203 24406 61015 122030 158639 317278 648047 793195 1296094 1586390 3240235 6480470 8424611 16849222 42123055 84246110 7908117541 15816235082 39540587705 79081175410 102805528033 205611056066 514027640165 1028055280330