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28250683 = 178715809
BaseRepresentation
bin110101111000…
…1001000111011
31222011021122121
41223301020323
524213010213
62445302111
7462061336
oct153611073
958137577
1028250683
1114a4617a
129564937
135b119a6
143a7561d
15273088d
hex1af123b

28250683 has 4 divisors (see below), whose sum is σ = 28268280. Its totient is φ = 28233088.

The previous prime is 28250659. The next prime is 28250689. The reversal of 28250683 is 38605282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28250683 - 29 = 28250171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28250689) 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, 6118 + ... + 9691.

It is an arithmetic number, because the mean of its divisors is an integer number (7067070).

Almost surely, 228250683 is an apocalyptic number.

28250683 is a deficient number, since it is larger than the sum of its proper divisors (17597).

28250683 is a wasteful number, since it uses less digits than its factorization.

28250683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17596.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28250683 is about 5315.1371572143. The cubic root of 28250683 is about 304.5624218741.

The spelling of 28250683 in words is "twenty-eight million, two hundred fifty thousand, six hundred eighty-three".

Divisors: 1 1787 15809 28250683