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28458014 = 2131094539
BaseRepresentation
bin110110010001…
…1110000011110
31222112211001112
41230203300132
524241124024
62453542022
7463613654
oct154436036
958484045
1028458014
1115077a22
129644912
135b85180
143acadd4
15277200e
hex1b23c1e

28458014 has 8 divisors (see below), whose sum is σ = 45970680. Its totient is φ = 13134456.

The previous prime is 28458013. The next prime is 28458037. The reversal of 28458014 is 41085482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28458011) 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 3 ways as a sum of consecutive naturals, for example, 547244 + ... + 547295.

It is an arithmetic number, because the mean of its divisors is an integer number (5746335).

Almost surely, 228458014 is an apocalyptic number.

28458014 is a deficient number, since it is larger than the sum of its proper divisors (17512666).

28458014 is a wasteful number, since it uses less digits than its factorization.

28458014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094554.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 28458014 is about 5334.6053274821. The cubic root of 28458014 is about 305.3056650791.

The spelling of 28458014 in words is "twenty-eight million, four hundred fifty-eight thousand, fourteen".

Divisors: 1 2 13 26 1094539 2189078 14229007 28458014