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28470158847 = 32131912807089
BaseRepresentation
bin11010100000111101…
…000010010111111111
32201111010121220211200
4122200331002113333
5431301330040342
621025022150543
72025342233364
oct324075022777
981433556750
1028470158847
111108a7317a9
125626722453
1328b9455250
1415411b846b
15b1968794c
hex6a0f425ff

28470158847 has 24 divisors (see below), whose sum is σ = 46617807600. Its totient is φ = 16597986048.

The previous prime is 28470158767. The next prime is 28470158869. The reversal of 28470158847 is 74885107482.

It is not a de Polignac number, because 28470158847 - 212 = 28470154751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28470158793 and 28470158802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470158897) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6401322 + ... + 6405767.

It is an arithmetic number, because the mean of its divisors is an integer number (1942408650).

Almost surely, 228470158847 is an apocalyptic number.

28470158847 is a deficient number, since it is larger than the sum of its proper divisors (18147648753).

28470158847 is a wasteful number, since it uses less digits than its factorization.

28470158847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807127 (or 12807124 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 54.

The spelling of 28470158847 in words is "twenty-eight billion, four hundred seventy million, one hundred fifty-eight thousand, eight hundred forty-seven".

Divisors: 1 3 9 13 19 39 57 117 171 247 741 2223 12807089 38421267 115263801 166492157 243334691 499476471 730004073 1498429413 2190012219 3163350983 9490052949 28470158847