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28914139045 = 511717404389
BaseRepresentation
bin11010111011011010…
…101011111110100101
32202122002001110011201
4122323122223332211
5433204004422140
621141042202501
72042343061321
oct327332537645
982562043151
1028914139045
1111298306690
12572b353431
13295a424c1c
14158414a981
15b4363749a
hex6bb6abfa5

28914139045 has 16 divisors (see below), whose sum is σ = 38384357760. Its totient is φ = 20732286400.

The previous prime is 28914139039. The next prime is 28914139049. The reversal of 28914139045 is 54093141982.

It is not a de Polignac number, because 28914139045 - 225 = 28880584613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28914138986 and 28914139004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28914139049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3698290 + ... + 3706099.

It is an arithmetic number, because the mean of its divisors is an integer number (2399022360).

Almost surely, 228914139045 is an apocalyptic number.

It is an amenable number.

28914139045 is a deficient number, since it is larger than the sum of its proper divisors (9470218715).

28914139045 is a wasteful number, since it uses less digits than its factorization.

28914139045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7404476.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 28914139045 in words is "twenty-eight billion, nine hundred fourteen million, one hundred thirty-nine thousand, forty-five".

Divisors: 1 5 11 55 71 355 781 3905 7404389 37021945 81448279 407241395 525711619 2628558095 5782827809 28914139045