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28405549153 = 269245942943
BaseRepresentation
bin11010011101000110…
…100100100001100001
32201022122001102000001
4122131012210201201
5431133310033103
621014353300001
72023626120052
oct323506444141
981278042001
1028405549153
1111057212563
125608b64601
1328a8c53067
14153679a729
15b13b7401d
hex69d1a4861

28405549153 has 8 divisors (see below), whose sum is σ = 28523404800. Its totient is φ = 28287784848.

The previous prime is 28405549141. The next prime is 28405549229. The reversal of 28405549153 is 35194550482.

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 28405549153 - 29 = 28405548641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28415549153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640000 + ... + 682942.

It is an arithmetic number, because the mean of its divisors is an integer number (3565425600).

Almost surely, 228405549153 is an apocalyptic number.

It is an amenable number.

28405549153 is a deficient number, since it is larger than the sum of its proper divisors (117855647).

28405549153 is a wasteful number, since it uses less digits than its factorization.

28405549153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45671.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 28405549153 in words is "twenty-eight billion, four hundred five million, five hundred forty-nine thousand, one hundred fifty-three".

Divisors: 1 269 2459 42943 661471 11551667 105596837 28405549153