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28060087 = 115774421
BaseRepresentation
bin110101100001…
…0100110110111
31221210121012111
41223002212313
524140410322
62441231451
7460335556
oct153024667
957717174
1028060087
1114925a60
129492587
135a76003
143a25d9d
1526e4177
hex1ac29b7

28060087 has 8 divisors (see below), whose sum is σ = 30670992. Its totient is φ = 25459200.

The previous prime is 28060079. The next prime is 28060091. The reversal of 28060087 is 78006082.

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 28060087 - 23 = 28060079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28060007) 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, 4137 + ... + 8557.

It is an arithmetic number, because the mean of its divisors is an integer number (3833874).

Almost surely, 228060087 is an apocalyptic number.

28060087 is a deficient number, since it is larger than the sum of its proper divisors (2610905).

28060087 is a wasteful number, since it uses less digits than its factorization.

28060087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5009.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 28060087 is about 5297.1772671867. The cubic root of 28060087 is about 303.8759557111.

The spelling of 28060087 in words is "twenty-eight million, sixty thousand, eighty-seven".

Divisors: 1 11 577 4421 6347 48631 2550917 28060087