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28984097 = 103439641
BaseRepresentation
bin110111010010…
…0001100100001
32000112112201002
41232210030201
524404442342
62513121345
7501234512
oct156441441
960475632
1028984097
11153a71aa
129859255
13600a76c
143bc6a09
152827d32
hex1ba4321

28984097 has 8 divisors (see below), whose sum is σ = 29377920. Its totient is φ = 28592640.

The previous prime is 28984093. The next prime is 28984121. The reversal of 28984097 is 79048982.

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 28984097 - 22 = 28984093 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28984093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44897 + ... + 45537.

It is an arithmetic number, because the mean of its divisors is an integer number (3672240).

Almost surely, 228984097 is an apocalyptic number.

It is an amenable number.

28984097 is a deficient number, since it is larger than the sum of its proper divisors (393823).

28984097 is a wasteful number, since it uses less digits than its factorization.

28984097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 28984097 is about 5383.6880481692. The cubic root of 28984097 is about 307.1755124671.

The spelling of 28984097 in words is "twenty-eight million, nine hundred eighty-four thousand, ninety-seven".

Divisors: 1 103 439 641 45217 66023 281399 28984097