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28339351 = 291815399
BaseRepresentation
bin110110000011…
…0110010010111
31222022210021121
41230012302113
524223324401
62451224411
7462611005
oct154066227
958283247
1028339351
1114aa6857
1295a8107
135b43161
143a99a75
15274bca1
hex1b06c97

28339351 has 8 divisors (see below), whose sum is σ = 29484000. Its totient is φ = 27205920.

The previous prime is 28339349. The next prime is 28339369. The reversal of 28339351 is 15393382.

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 28339351 - 21 = 28339349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28339321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2550 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (3685500).

Almost surely, 228339351 is an apocalyptic number.

28339351 is a deficient number, since it is larger than the sum of its proper divisors (1144649).

28339351 is a wasteful number, since it uses less digits than its factorization.

28339351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609.

The product of its digits is 19440, while the sum is 34.

The square root of 28339351 is about 5323.4717055696. The cubic root of 28339351 is about 304.8807237630.

The spelling of 28339351 in words is "twenty-eight million, three hundred thirty-nine thousand, three hundred fifty-one".

Divisors: 1 29 181 5249 5399 156571 977219 28339351