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28487002 = 217837853
BaseRepresentation
bin110110010101…
…0110101011010
31222121021211011
41230222311122
524243041002
62454324134
7464064325
oct154526532
958537734
1028487002
1115097785
12965964a
135b9541b
143ad77bc
15277a8d7
hex1b2ad5a

28487002 has 8 divisors (see below), whose sum is σ = 45244116. Its totient is φ = 13405632.

The previous prime is 28486987. The next prime is 28487033. The reversal of 28487002 is 20078482.

It can be written as a sum of positive squares in 2 ways, for example, as 27657081 + 829921 = 5259^2 + 911^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418893 + ... + 418960.

Almost surely, 228487002 is an apocalyptic number.

28487002 is a deficient number, since it is larger than the sum of its proper divisors (16757114).

28487002 is a wasteful number, since it uses less digits than its factorization.

28487002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837872.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28487002 is about 5337.3216129441. The cubic root of 28487002 is about 305.4092937360.

The spelling of 28487002 in words is "twenty-eight million, four hundred eighty-seven thousand, two".

Divisors: 1 2 17 34 837853 1675706 14243501 28487002