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1028013810 = 235191803533
BaseRepresentation
bin111101010001100…
…011111011110010
32122122101111211120
4331101203323302
54101132420220
6250001523110
734321654545
oct7521437362
92578344746
101028013810
11488317a9a
12248343496
13134c980c5
149a76085c
15603b6a40
hex3d463ef2

1028013810 has 32 divisors (see below), whose sum is σ = 2597088960. Its totient is φ = 259708608.

The previous prime is 1028013797. The next prime is 1028013821. The reversal of 1028013810 is 183108201.

It is a super-2 number, since 2×10280138102 = 2113624787101432200, which contains 22 as substring.

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, 901197 + ... + 902336.

It is an arithmetic number, because the mean of its divisors is an integer number (81159030).

Almost surely, 21028013810 is an apocalyptic number.

1028013810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1028013810 is an abundant number, since it is smaller than the sum of its proper divisors (1569075150).

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

1028013810 is a wasteful number, since it uses less digits than its factorization.

1028013810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803562.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1028013810 is about 32062.6544440725. The cubic root of 1028013810 is about 1009.2520718383.

It can be divided in two parts, 10280 and 13810, that added together give a triangular number (24090 = T219).

The spelling of 1028013810 in words is "one billion, twenty-eight million, thirteen thousand, eight hundred ten".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 1803533 3607066 5410599 9017665 10821198 18035330 27052995 34267127 54105990 68534254 102801381 171335635 205602762 342671270 514006905 1028013810