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28741141 = 1113200987
BaseRepresentation
bin110110110100…
…0111000010101
32000002012102201
41231220320111
524324204031
62504004501
7466203262
oct155507025
960065381
1028741141
1115250710
129760731
135c53cc0
143b62269
1527cad61
hex1b68e15

28741141 has 8 divisors (see below), whose sum is σ = 33765984. Its totient is φ = 24118320.

The previous prime is 28741133. The next prime is 28741177. The reversal of 28741141 is 14114782.

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

It is a cyclic number.

It is not a de Polignac number, because 28741141 - 23 = 28741133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741541) 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 7 ways as a sum of consecutive naturals, for example, 100351 + ... + 100636.

It is an arithmetic number, because the mean of its divisors is an integer number (4220748).

Almost surely, 228741141 is an apocalyptic number.

It is an amenable number.

28741141 is a deficient number, since it is larger than the sum of its proper divisors (5024843).

28741141 is a wasteful number, since it uses less digits than its factorization.

28741141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201011.

The product of its digits is 1792, while the sum is 28.

The square root of 28741141 is about 5361.0764777235. The cubic root of 28741141 is about 306.3148147698.

It can be divided in two parts, 28741 and 141, that added together give a palindrome (28882).

The spelling of 28741141 in words is "twenty-eight million, seven hundred forty-one thousand, one hundred forty-one".

Divisors: 1 11 13 143 200987 2210857 2612831 28741141