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28744014 = 2313368513
BaseRepresentation
bin110110110100…
…1100101001110
32000002100101010
41231221211032
524324302024
62504030050
7466214535
oct155514516
960070333
1028744014
1115252892
129762326
135c553c0
143b6331c
1527cbb29
hex1b6994e

28744014 has 16 divisors (see below), whose sum is σ = 61910352. Its totient is φ = 8844288.

The previous prime is 28744007. The next prime is 28744057. The reversal of 28744014 is 41044782.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184179 + ... + 184334.

It is an arithmetic number, because the mean of its divisors is an integer number (3869397).

Almost surely, 228744014 is an apocalyptic number.

28744014 is an abundant number, since it is smaller than the sum of its proper divisors (33166338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28744014 is a wasteful number, since it uses less digits than its factorization.

28744014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368531.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 28744014 is about 5361.3444209452. The cubic root of 28744014 is about 306.3250209656.

Adding to 28744014 its reverse (41044782), we get a palindrome (69788796).

The spelling of 28744014 in words is "twenty-eight million, seven hundred forty-four thousand, fourteen".

Divisors: 1 2 3 6 13 26 39 78 368513 737026 1105539 2211078 4790669 9581338 14372007 28744014