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28479086 = 247302969
BaseRepresentation
bin110110010100…
…0111001101110
31222120212221222
41230220321232
524242312321
62454223342
7464032256
oct154507156
958525858
1028479086
1115091839
129654b52
135b9193c
143ad4966
1527783ab
hex1b28e6e

28479086 has 8 divisors (see below), whose sum is σ = 43627680. Its totient is φ = 13936528.

The previous prime is 28479067. The next prime is 28479109. The reversal of 28479086 is 68097482.

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

It is a super-2 number, since 2×284790862 = 1622116678790792, which contains 22 as substring.

It is a congruent number.

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, 151391 + ... + 151578.

It is an arithmetic number, because the mean of its divisors is an integer number (5453460).

Almost surely, 228479086 is an apocalyptic number.

28479086 is a deficient number, since it is larger than the sum of its proper divisors (15148594).

28479086 is a wasteful number, since it uses less digits than its factorization.

28479086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303018.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 28479086 is about 5336.5799909680. The cubic root of 28479086 is about 305.3810019565.

The spelling of 28479086 in words is "twenty-eight million, four hundred seventy-nine thousand, eighty-six".

Divisors: 1 2 47 94 302969 605938 14239543 28479086