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8472806823 = 313375871661
BaseRepresentation
bin1111110010000010…
…01100010110100111
3210212111002011221010
413321001030112213
5114323014304243
63520425353303
7416651445465
oct77101142647
923774064833
108472806823
113658751198
121785638833
13a50496980
145a53c1835
15348c91433
hex1f904c5a7

8472806823 has 16 divisors (see below), whose sum is σ = 12494896736. Its totient is φ = 5073114240.

The previous prime is 8472806821. The next prime is 8472806833. The reversal of 8472806823 is 3286082748.

It is a happy number.

It is not a de Polignac number, because 8472806823 - 21 = 8472806821 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 (8472806821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2934388 + ... + 2937273.

It is an arithmetic number, because the mean of its divisors is an integer number (780931046).

Almost surely, 28472806823 is an apocalyptic number.

8472806823 is a deficient number, since it is larger than the sum of its proper divisors (4022089913).

8472806823 is a wasteful number, since it uses less digits than its factorization.

8472806823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5871714.

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 8472806823 is about 92047.8507245009. The cubic root of 8472806823 is about 2038.6488893219.

The spelling of 8472806823 in words is "eight billion, four hundred seventy-two million, eight hundred six thousand, eight hundred twenty-three".

Divisors: 1 3 13 37 39 111 481 1443 5871661 17614983 76331593 217251457 228994779 651754371 2824268941 8472806823