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28205849374 = 2128891094183
BaseRepresentation
bin11010010001001100…
…110001101100011110
32200210201021121101221
4122101030301230132
5430231144134444
620542501123554
72015652523003
oct322114615436
980721247357
1028205849374
1110a6451511a
1255720b95ba
132876772601
1415180558aa
15b01378a84
hex691331b1e

28205849374 has 8 divisors (see below), whose sum is σ = 42312095280. Its totient is φ = 14101817616.

The previous prime is 28205849369. The next prime is 28205849389. The reversal of 28205849374 is 47394850282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521314 + ... + 572869.

It is an arithmetic number, because the mean of its divisors is an integer number (5289011910).

Almost surely, 228205849374 is an apocalyptic number.

28205849374 is a deficient number, since it is larger than the sum of its proper divisors (14106245906).

28205849374 is a wasteful number, since it uses less digits than its factorization.

28205849374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107074.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 28205849374 in words is "twenty-eight billion, two hundred five million, eight hundred forty-nine thousand, three hundred seventy-four".

Divisors: 1 2 12889 25778 1094183 2188366 14102924687 28205849374