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3405402287 = 723611372531
BaseRepresentation
bin1100101011111010…
…0101000010101111
322210022212100201122
43022332211002233
523433240333122
61321525331155
7150250304360
oct31276450257
98708770648
103405402287
111498296161
127b0566abb
13423697a51
142443b5b67
1514de73142
hexcafa50af

3405402287 has 32 divisors (see below), whose sum is σ = 4159448064. Its totient is φ = 2725113600.

The previous prime is 3405402271. The next prime is 3405402289. The reversal of 3405402287 is 7822045043.

It is not a de Polignac number, because 3405402287 - 24 = 3405402271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3405402289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1344212 + ... + 1346742.

It is an arithmetic number, because the mean of its divisors is an integer number (129982752).

Almost surely, 23405402287 is an apocalyptic number.

3405402287 is a deficient number, since it is larger than the sum of its proper divisors (754045777).

3405402287 is a wasteful number, since it uses less digits than its factorization.

3405402287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759.

The product of its (nonzero) digits is 53760, while the sum is 35.

The square root of 3405402287 is about 58355.8247906754. The cubic root of 3405402287 is about 1504.4905855308.

The spelling of 3405402287 in words is "three billion, four hundred five million, four hundred two thousand, two hundred eighty-seven".

Divisors: 1 7 23 61 137 161 427 959 1403 2531 3151 8357 9821 17717 22057 58213 58499 154391 192211 346747 407491 1080737 1345477 2427229 3550993 7975181 21151567 24856951 55826267 148060969 486486041 3405402287