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28495141061 = 64344315927
BaseRepresentation
bin11010100010011100…
…010101100011000101
32201112212122010222212
4122202130111203011
5431324224003221
621031313433205
72026064463002
oct324234254305
981485563885
1028495141061
11110a2845262
125632b6b805
1328c169131a
14154463c8a9
15b1b96eb5b
hex6a27158c5

28495141061 has 4 divisors (see below), whose sum is σ = 28539457632. Its totient is φ = 28450824492.

The previous prime is 28495141019. The next prime is 28495141079. The reversal of 28495141061 is 16014159482.

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 a de Polignac number, because none of the positive numbers 2k-28495141061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28495140061) 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, 22157321 + ... + 22158606.

It is an arithmetic number, because the mean of its divisors is an integer number (7134864408).

Almost surely, 228495141061 is an apocalyptic number.

It is an amenable number.

28495141061 is a deficient number, since it is larger than the sum of its proper divisors (44316571).

28495141061 is an equidigital number, since it uses as much as digits as its factorization.

28495141061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44316570.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 28495141061 in words is "twenty-eight billion, four hundred ninety-five million, one hundred forty-one thousand, sixty-one".

Divisors: 1 643 44315927 28495141061