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1028315130 = 23559580969
BaseRepresentation
bin111101010010101…
…101011111111010
32122122221211011120
4331102231133322
54101222041010
6250012210110
734324351203
oct7522553772
92578854146
101028315130
11488503417
12248469936
131350722bb
149a7dc5aa
1560425e70
hex3d4ad7fa

1028315130 has 32 divisors (see below), whose sum is σ = 2509790400. Its totient is φ = 269569152.

The previous prime is 1028315107. The next prime is 1028315143. The reversal of 1028315130 is 315138201.

It is a self number, because there is not a number n which added to its sum of digits gives 1028315130.

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, 288715 + ... + 292254.

It is an arithmetic number, because the mean of its divisors is an integer number (78430950).

Almost surely, 21028315130 is an apocalyptic number.

1028315130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028315130 is an abundant number, since it is smaller than the sum of its proper divisors (1481475270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028315130 is a wasteful number, since it uses less digits than its factorization.

1028315130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581038.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1028315130 is about 32067.3530245326. The cubic root of 1028315130 is about 1009.3506691282.

The spelling of 1028315130 in words is "one billion, twenty-eight million, three hundred fifteen thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 59 118 177 295 354 590 885 1770 580969 1161938 1742907 2904845 3485814 5809690 8714535 17429070 34277171 68554342 102831513 171385855 205663026 342771710 514157565 1028315130