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84740901 = 3723175447
BaseRepresentation
bin1010000110100…
…00101100100101
312220110021122220
411003100230211
5133143202101
612224142553
72046200010
oct503205445
9186407586
1084740901
114391a103
1224467a59
131473025b
14b37c377
15768d636
hex50d0b25

84740901 has 16 divisors (see below), whose sum is σ = 134744064. Its totient is φ = 46317744.

The previous prime is 84740899. The next prime is 84740923. The reversal of 84740901 is 10904748.

It is not a de Polignac number, because 84740901 - 21 = 84740899 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84740951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87241 + ... + 88206.

It is an arithmetic number, because the mean of its divisors is an integer number (8421504).

Almost surely, 284740901 is an apocalyptic number.

It is an amenable number.

84740901 is a deficient number, since it is larger than the sum of its proper divisors (50003163).

84740901 is a wasteful number, since it uses less digits than its factorization.

84740901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175480.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 84740901 is about 9205.4821166520. The cubic root of 84740901 is about 439.2357618582.

The spelling of 84740901 in words is "eighty-four million, seven hundred forty thousand, nine hundred one".

Divisors: 1 3 7 21 23 69 161 483 175447 526341 1228129 3684387 4035281 12105843 28246967 84740901