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28325741 = 227124783
BaseRepresentation
bin110110000001…
…1011101101101
31222022002121112
41230003131231
524222410431
62451041405
7462523223
oct154033555
958262545
1028325741
1114a97604
1295a0265
135b39bc2
143a94b13
152747c2b
hex1b0376d

28325741 has 4 divisors (see below), whose sum is σ = 28450752. Its totient is φ = 28200732.

The previous prime is 28325729. The next prime is 28325747. The reversal of 28325741 is 14752382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14752382 = 27376191.

It is a cyclic number.

It is not a de Polignac number, because 28325741 - 26 = 28325677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28325698 and 28325707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28325747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62165 + ... + 62618.

It is an arithmetic number, because the mean of its divisors is an integer number (7112688).

Almost surely, 228325741 is an apocalyptic number.

It is an amenable number.

28325741 is a deficient number, since it is larger than the sum of its proper divisors (125011).

28325741 is a wasteful number, since it uses less digits than its factorization.

28325741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125010.

The product of its digits is 13440, while the sum is 32.

The square root of 28325741 is about 5322.1932509070. The cubic root of 28325741 is about 304.8319095296.

The spelling of 28325741 in words is "twenty-eight million, three hundred twenty-five thousand, seven hundred forty-one".

Divisors: 1 227 124783 28325741