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28614373921 = 729711985317
BaseRepresentation
bin11010101001100011…
…001011001000100001
32201212011222210201201
4122221203023020201
5432100234431141
621051213201201
72032043110450
oct325143131041
981764883651
1028614373921
1111154082711
125666a90201
1329102aa003
1415563d8b97
15b27173031
hex6a98cb221

28614373921 has 16 divisors (see below), whose sum is σ = 34306295040. Its totient is φ = 23347316160.

The previous prime is 28614373883. The next prime is 28614373961. The reversal of 28614373921 is 12937341682.

It is not a de Polignac number, because 28614373921 - 29 = 28614373409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28614373961) 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, 978246 + ... + 1007071.

It is an arithmetic number, because the mean of its divisors is an integer number (2144143440).

Almost surely, 228614373921 is an apocalyptic number.

It is an amenable number.

28614373921 is a deficient number, since it is larger than the sum of its proper divisors (5691921119).

28614373921 is a wasteful number, since it uses less digits than its factorization.

28614373921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985424.

The product of its digits is 435456, while the sum is 46.

The spelling of 28614373921 in words is "twenty-eight billion, six hundred fourteen million, three hundred seventy-three thousand, nine hundred twenty-one".

Divisors: 1 7 29 71 203 497 2059 14413 1985317 13897219 57574193 140957507 403019351 986702549 4087767703 28614373921