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2102087743 = 71966123911
BaseRepresentation
bin111110101001011…
…0101000000111111
312102111110010021121
41331102311000333
513301113301433
6544331011411
7103043310460
oct17522650077
95374403247
102102087743
119896346a8
124a7b99b67
1327666c202
1415d270d67
15c482ac2d
hex7d4b503f

2102087743 has 16 divisors (see below), whose sum is σ = 2532759040. Its totient is φ = 1704304800.

The previous prime is 2102087731. The next prime is 2102087759. The reversal of 2102087743 is 3477802012.

It is a cyclic number.

It is not a de Polignac number, because 2102087743 - 221 = 2099990591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102087699 and 2102087708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102087843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75958 + ... + 99868.

It is an arithmetic number, because the mean of its divisors is an integer number (158297440).

Almost surely, 22102087743 is an apocalyptic number.

2102087743 is a deficient number, since it is larger than the sum of its proper divisors (430671297).

2102087743 is a wasteful number, since it uses less digits than its factorization.

2102087743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24598.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 2102087743 is about 45848.5304344643. The cubic root of 2102087743 is about 1281.0033927184.

Adding to 2102087743 its reverse (3477802012), we get a palindrome (5579889755).

The spelling of 2102087743 in words is "two billion, one hundred two million, eighty-seven thousand, seven hundred forty-three".

Divisors: 1 7 19 133 661 4627 12559 23911 87913 167377 454309 3180163 15805171 110636197 300298249 2102087743