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28285132845733 = 1917319145053149
BaseRepresentation
bin1100110111001101001010…
…10010111011001010100101
310201011000212112121020122221
412123212211102323022211
512201410423002030413
6140054002144352341
75646350650156441
oct633464522731245
9121130775536587
1028285132845733
119015726110515
123209a219156b1
1312a237986159a
146db017319821
15340b6418768d
hex19b9a54bb2a5

28285132845733 has 16 divisors (see below), whose sum is σ = 30102712704000. Its totient is φ = 26502063779520.

The previous prime is 28285132845719. The next prime is 28285132845769. The reversal of 28285132845733 is 33754823158282.

It is not a de Polignac number, because 28285132845733 - 25 = 28285132845701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285132840733) 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, 21898758 + ... + 23154391.

It is an arithmetic number, because the mean of its divisors is an integer number (1881419544000).

Almost surely, 228285132845733 is an apocalyptic number.

It is an amenable number.

28285132845733 is a deficient number, since it is larger than the sum of its proper divisors (1817579858267).

28285132845733 is a wasteful number, since it uses less digits than its factorization.

28285132845733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45053532.

The product of its digits is 77414400, while the sum is 61.

The spelling of 28285132845733 in words is "twenty-eight trillion, two hundred eighty-five billion, one hundred thirty-two million, eight hundred forty-five thousand, seven hundred thirty-three".

Divisors: 1 19 173 191 3287 3629 33043 627817 45053149 856009831 7794194777 8605151459 148089700763 163497877721 1488691202407 28285132845733