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28639052411 = 972179135497
BaseRepresentation
bin11010101011000001…
…010100001001111011
32201220220102121020212
4122223001110021323
5432123044134121
621053454141335
72032462633424
oct325301241173
981826377225
1028639052411
1111166aa8a62
1256731b184b
13291543aa78
1415597c064b
15b293ea25b
hex6ab05427b

28639052411 has 8 divisors (see below), whose sum is σ = 28947792720. Its totient is φ = 28330587648.

The previous prime is 28639052401. The next prime is 28639052423. The reversal of 28639052411 is 11425093682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28639052411 - 234 = 11459183227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28639052401) 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 7 ways as a sum of consecutive naturals, for example, 143615 + ... + 279111.

It is an arithmetic number, because the mean of its divisors is an integer number (3618474090).

Almost surely, 228639052411 is an apocalyptic number.

28639052411 is a deficient number, since it is larger than the sum of its proper divisors (308740309).

28639052411 is a wasteful number, since it uses less digits than its factorization.

28639052411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137773.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 28639052411 in words is "twenty-eight billion, six hundred thirty-nine million, fifty-two thousand, four hundred eleven".

Divisors: 1 97 2179 135497 211363 13143209 295247963 28639052411