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20020110 = 235111931103
BaseRepresentation
bin100110001011…
…1101110001110
31101200010102120
41030113232032
520111120420
61553033410
7332111445
oct114275616
941603376
1020020110
1110334450
126855866
1341bc626
142931d5c
151b56d40
hex1317b8e

20020110 has 128 divisors (see below), whose sum is σ = 57507840. Its totient is φ = 4406400.

The previous prime is 20020109. The next prime is 20020151. The reversal of 20020110 is 1102002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 194319 + ... + 194421.

It is an arithmetic number, because the mean of its divisors is an integer number (449280).

Almost surely, 220020110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28753920).

20020110 is an abundant number, since it is smaller than the sum of its proper divisors (37487730).

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

20020110 is a wasteful number, since it uses less digits than its factorization.

20020110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 20020110 is about 4474.3837564518. The cubic root of 20020110 is about 271.5327094141.

Adding to 20020110 its reverse (1102002), we get a palindrome (21122112).

The spelling of 20020110 in words is "twenty million, twenty thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 11 15 19 22 30 31 33 38 55 57 62 66 93 95 103 110 114 155 165 186 190 206 209 285 309 310 330 341 418 465 515 570 589 618 627 682 930 1023 1030 1045 1133 1178 1254 1545 1705 1767 1957 2046 2090 2266 2945 3090 3135 3193 3399 3410 3534 3914 5115 5665 5871 5890 6270 6386 6479 6798 8835 9579 9785 10230 11330 11742 12958 15965 16995 17670 19158 19437 19570 21527 29355 31930 32395 33990 35123 38874 43054 47895 58710 60667 64581 64790 70246 95790 97185 105369 107635 121334 129162 175615 182001 194370 210738 215270 303335 322905 351230 364002 526845 606670 645810 667337 910005 1053690 1334674 1820010 2002011 3336685 4004022 6673370 10010055 20020110