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28023359 = 7131013049
BaseRepresentation
bin110101011100…
…1101000111111
31221201201211012
41222321220333
524133221414
62440345435
7460123520
oct152715077
957651735
1028023359
1114900401
12947527b
135a62390
143a16847
1526d833e
hex1ab9a3f

28023359 has 16 divisors (see below), whose sum is σ = 34843200. Its totient is φ = 21945600.

The previous prime is 28023343. The next prime is 28023371. The reversal of 28023359 is 95332082.

It is a cyclic number.

It is not a de Polignac number, because 28023359 - 24 = 28023343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7667 + ... + 10715.

It is an arithmetic number, because the mean of its divisors is an integer number (2177700).

Almost surely, 228023359 is an apocalyptic number.

28023359 is a deficient number, since it is larger than the sum of its proper divisors (6819841).

28023359 is a wasteful number, since it uses less digits than its factorization.

28023359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3170.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 28023359 is about 5293.7093800094. The cubic root of 28023359 is about 303.7433161947.

It can be divided in two parts, 28023 and 359, that added together give a palindrome (28382).

The spelling of 28023359 in words is "twenty-eight million, twenty-three thousand, three hundred fifty-nine".

Divisors: 1 7 13 91 101 707 1313 3049 9191 21343 39637 277459 307949 2155643 4003337 28023359