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2130310020 = 2235191868693
BaseRepresentation
bin111111011111001…
…1111001110000100
312111110112221222010
41332332133032010
513330324410040
6551215534220
7103535223246
oct17676371604
95443487863
102130310020
119a35604a3
124b552a370
1327c470c97
14162cda096
15c7052e80
hex7ef9f384

2130310020 has 48 divisors (see below), whose sum is σ = 6278811840. Its totient is φ = 538183296.

The previous prime is 2130310019. The next prime is 2130310093. The reversal of 2130310020 is 200130312.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2130309978 and 2130310005.

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, 933207 + ... + 935486.

It is an arithmetic number, because the mean of its divisors is an integer number (130808580).

Almost surely, 22130310020 is an apocalyptic number.

2130310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2130310020 is an abundant number, since it is smaller than the sum of its proper divisors (4148501820).

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

2130310020 is a wasteful number, since it uses less digits than its factorization.

2130310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868724 (or 1868722 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2130310020 is about 46155.2816046008. The cubic root of 2130310020 is about 1286.7107717826.

Adding to 2130310020 its reverse (200130312), we get a palindrome (2330440332).

The spelling of 2130310020 in words is "two billion, one hundred thirty million, three hundred ten thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 57 60 76 95 114 190 228 285 380 570 1140 1868693 3737386 5606079 7474772 9343465 11212158 18686930 22424316 28030395 35505167 37373860 56060790 71010334 106515501 112121580 142020668 177525835 213031002 355051670 426062004 532577505 710103340 1065155010 2130310020