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84248761 = 530315887
BaseRepresentation
bin1010000010110…
…00100010111001
312212112021120111
411001120202321
5133031430021
612205424321
72042050132
oct501304271
9185467514
1084248761
1143613383
122426b0a1
13145ba24c
14b290c89
1575e28e1
hex50588b9

84248761 has 4 divisors (see below), whose sum is σ = 84269952. Its totient is φ = 84227572.

The previous prime is 84248737. The next prime is 84248767. The reversal of 84248761 is 16784248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84248761 - 25 = 84248729 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84248767) 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 3 ways as a sum of consecutive naturals, for example, 2641 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (21067488).

Almost surely, 284248761 is an apocalyptic number.

It is an amenable number.

84248761 is a deficient number, since it is larger than the sum of its proper divisors (21191).

84248761 is a wasteful number, since it uses less digits than its factorization.

84248761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21190.

The product of its digits is 86016, while the sum is 40.

The square root of 84248761 is about 9178.7123824641. The cubic root of 84248761 is about 438.3838107650.

The spelling of 84248761 in words is "eighty-four million, two hundred forty-eight thousand, seven hundred sixty-one".

Divisors: 1 5303 15887 84248761