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2002019990 = 253147313439
BaseRepresentation
bin111011101010100…
…0110011010010110
312011112011011010112
41313111012122112
513100004114430
6530354123022
7100416613655
oct16725063226
95145134115
102002019990
119380a7283
1247a580472
1325ba03919
1414dc6319c
15bab61195
hex77546696

2002019990 has 64 divisors (see below), whose sum is σ = 3819847680. Its totient is φ = 754341120.

The previous prime is 2002019947. The next prime is 2002020029. The reversal of 2002019990 is 999102002.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4560191 + ... + 4560629.

It is an arithmetic number, because the mean of its divisors is an integer number (59685120).

Almost surely, 22002019990 is an apocalyptic number.

2002019990 is a deficient number, since it is larger than the sum of its proper divisors (1817827690).

2002019990 is a wasteful number, since it uses less digits than its factorization.

2002019990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 2002019990 is about 44743.9380251672. The cubic root of 2002019990 is about 1260.3450784916.

The spelling of 2002019990 in words is "two billion, two million, nineteen thousand, nine hundred ninety".

Divisors: 1 2 5 10 31 47 62 94 155 235 310 313 439 470 626 878 1457 1565 2195 2914 3130 4390 7285 9703 13609 14570 14711 19406 20633 27218 29422 41266 48515 68045 73555 97030 103165 136090 137407 147110 206330 274814 456041 639623 687035 912082 1279246 1374070 2280205 3198115 4259617 4560410 6396230 6458129 8519234 12916258 21298085 32290645 42596170 64581290 200201999 400403998 1001009995 2002019990