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28054688313169 = 74007812616167
BaseRepresentation
bin1100110000011111111011…
…01110110010111101010001
310200100000001110120001202101
412120033331232302331101
512134122000202010134
6135400051302320401
75623612221025330
oct630177556627521
9120300043501671
1028054688313169
118a36a21194401
12319122a429101
1312867130460cb
146cdbd5b55d17
15339b7807ae14
hex1983fdbb2f51

28054688313169 has 4 divisors (see below), whose sum is σ = 32062500929344. Its totient is φ = 24046875696996.

The previous prime is 28054688313163. The next prime is 28054688313269. The reversal of 28054688313169 is 96131388645082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28054688313169 - 23 = 28054688313161 is a prime.

It is a super-2 number, since 2×280546883131692 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28054688313169.

It is not an unprimeable number, because it can be changed into a prime (28054688313161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003906308077 + ... + 2003906308090.

It is an arithmetic number, because the mean of its divisors is an integer number (8015625232336).

Almost surely, 228054688313169 is an apocalyptic number.

28054688313169 is the 3058033-rd hex number.

It is an amenable number.

28054688313169 is a deficient number, since it is larger than the sum of its proper divisors (4007812616175).

28054688313169 is an equidigital number, since it uses as much as digits as its factorization.

28054688313169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007812616174.

The product of its (nonzero) digits is 59719680, while the sum is 64.

The spelling of 28054688313169 in words is "twenty-eight trillion, fifty-four billion, six hundred eighty-eight million, three hundred thirteen thousand, one hundred sixty-nine".

Divisors: 1 7 4007812616167 28054688313169