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28741205 = 5194147157
BaseRepresentation
bin110110110100…
…0111001010101
32000002012112002
41231220321111
524324204310
62504005045
7466203413
oct155507125
960065462
1028741205
1115250769
129760785
135c5403c
143b622b3
1527cada5
hex1b68e55

28741205 has 32 divisors (see below), whose sum is σ = 38223360. Its totient is φ = 20666880.

The previous prime is 28741199. The next prime is 28741213. The reversal of 28741205 is 50214782.

It is not a de Polignac number, because 28741205 - 212 = 28737109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182987 + ... + 183143.

It is an arithmetic number, because the mean of its divisors is an integer number (1194480).

Almost surely, 228741205 is an apocalyptic number.

It is an amenable number.

28741205 is a deficient number, since it is larger than the sum of its proper divisors (9482155).

28741205 is a wasteful number, since it uses less digits than its factorization.

28741205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 28741205 is about 5361.0824466706. The cubic root of 28741205 is about 306.3150421341.

Adding to 28741205 its reverse (50214782), we get a palindrome (78955987).

The spelling of 28741205 in words is "twenty-eight million, seven hundred forty-one thousand, two hundred five".

Divisors: 1 5 19 41 47 95 157 205 235 779 785 893 1927 2983 3895 4465 6437 7379 9635 14915 32185 36613 36895 122303 140201 183065 302539 611515 701005 1512695 5748241 28741205