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28341825 = 3521919889
BaseRepresentation
bin110110000011…
…1011001000001
31222022220200020
41230013121001
524223414300
62451244053
7462621141
oct154073101
958286606
1028341825
1114aa86a6
1295a9629
135b44315
143a9a921
15274c8a0
hex1b07641

28341825 has 24 divisors (see below), whose sum is σ = 49327200. Its totient is φ = 14319360.

The previous prime is 28341823. The next prime is 28341829. The reversal of 28341825 is 52814382.

It is not a de Polignac number, because 28341825 - 21 = 28341823 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28341821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8520 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (2055300).

Almost surely, 228341825 is an apocalyptic number.

28341825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28341825 is a deficient number, since it is larger than the sum of its proper divisors (20985375).

28341825 is a wasteful number, since it uses less digits than its factorization.

28341825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19921 (or 19916 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

The square root of 28341825 is about 5323.7040676582. The cubic root of 28341825 is about 304.8895954430.

The spelling of 28341825 in words is "twenty-eight million, three hundred forty-one thousand, eight hundred twenty-five".

Divisors: 1 3 5 15 19 25 57 75 95 285 475 1425 19889 59667 99445 298335 377891 497225 1133673 1491675 1889455 5668365 9447275 28341825