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211000002 = 231371971303
BaseRepresentation
bin11001001001110…
…01101011000010
3112201000220120220
430210321223002
5413004000002
632534243510
75141320233
oct1444715302
9481026526
10211000002
11a9116474
125a7b6596
1334939095
142004708a
15137cd7bc
hexc939ac2

211000002 has 32 divisors (see below), whose sum is σ = 427565952. Its totient is φ = 69412224.

The previous prime is 210999983. The next prime is 211000007. The reversal of 211000002 is 200000112.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (211000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161283 + ... + 162585.

It is an arithmetic number, because the mean of its divisors is an integer number (13361436).

Almost surely, 2211000002 is an apocalyptic number.

211000002 is an abundant number, since it is smaller than the sum of its proper divisors (216565950).

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

211000002 is a wasteful number, since it uses less digits than its factorization.

211000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642.

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

The square root of 211000002 is about 14525.8391151768. The cubic root of 211000002 is about 595.3341831949.

Adding to 211000002 its reverse (200000112), we get a palindrome (411000114).

The spelling of 211000002 in words is "two hundred eleven million, two", and thus it is an aban number.

Divisors: 1 2 3 6 137 197 274 394 411 591 822 1182 1303 2606 3909 7818 26989 53978 80967 161934 178511 256691 357022 513382 535533 770073 1071066 1540146 35166667 70333334 105500001 211000002