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2111200002 = 232257456377
BaseRepresentation
bin111110111010110…
…0101101100000010
312110010121001221200
41331311211230002
513310431400002
6545254202030
7103213622022
oct17565455402
95403531850
102111200002
1199379889a
124ab053316
1327850c992
14160563a82
15c552ab1c
hex7dd65b02

2111200002 has 24 divisors (see below), whose sum is σ = 4592075436. Its totient is φ = 700993536.

The previous prime is 2111200001. The next prime is 2111200019. The reversal of 2111200002 is 2000021112.

It can be written as a sum of positive squares in 2 ways, for example, as 2108738241 + 2461761 = 45921^2 + 1569^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2111200001) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 223563 + ... + 232814.

Almost surely, 22111200002 is an apocalyptic number.

2111200002 is an abundant number, since it is smaller than the sum of its proper divisors (2480875434).

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

2111200002 is a wasteful number, since it uses less digits than its factorization.

2111200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456642 (or 456639 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2111200002 is about 45947.7964868828. The cubic root of 2111200002 is about 1282.8517152617.

Adding to 2111200002 its reverse (2000021112), we get a palindrome (4111221114).

The spelling of 2111200002 in words is "two billion, one hundred eleven million, two hundred thousand, two".

Divisors: 1 2 3 6 9 18 257 514 771 1542 2313 4626 456377 912754 1369131 2738262 4107393 8214786 117288889 234577778 351866667 703733334 1055600001 2111200002