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28445120037671 = 67479988467187
BaseRepresentation
bin1100111011110111001010…
…10001101000001100100111
310201201022211022201200022012
412131323211101220030213
512212021101212201141
6140255301401224435
75664043406646401
oct635734521501447
9121638738650265
1028445120037671
1190775647757a7
123234a3119211b
1312b449526546c
14704a73257b71
15344dc9944ceb
hex19dee5468327

28445120037671 has 8 divisors (see below), whose sum is σ = 28875690163200. Its totient is φ = 28014726856248.

The previous prime is 28445120037667. The next prime is 28445120037707. The reversal of 28445120037671 is 17673002154482.

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 28445120037671 - 22 = 28445120037667 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 (28445120030671) 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, 43912061 + ... + 44555126.

It is an arithmetic number, because the mean of its divisors is an integer number (3609461270400).

Almost surely, 228445120037671 is an apocalyptic number.

28445120037671 is a deficient number, since it is larger than the sum of its proper divisors (430570125529).

28445120037671 is an equidigital number, since it uses as much as digits as its factorization.

28445120037671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88472053.

The product of its (nonzero) digits is 2257920, while the sum is 50.

The spelling of 28445120037671 in words is "twenty-eight trillion, four hundred forty-five billion, one hundred twenty million, thirty-seven thousand, six hundred seventy-one".

Divisors: 1 67 4799 321533 88467187 5927301529 424554030413 28445120037671