Base | Representation |
---|---|
bin | 101000101011011110… |
… | …1001010110001011111 |
3 | 22100111010220110011202 |
4 | 1101112331022301133 |
5 | 2412402201041112 |
6 | 104044245510115 |
7 | 6211550426102 |
oct | 1212675126137 |
9 | 270433813152 |
10 | 87358221407 |
11 | 340594907a6 |
12 | 14b2011233b |
13 | 8312712092 |
14 | 432a102739 |
15 | 24144976c2 |
hex | 1456f4ac5f |
87358221407 has 24 divisors (see below), whose sum is σ = 92642845680. Its totient is φ = 82320157440.
The previous prime is 87358221403. The next prime is 87358221463. The reversal of 87358221407 is 70412285378.
It is not a de Polignac number, because 87358221407 - 22 = 87358221403 is a prime.
It is a super-3 number, since 3×873582214073 (a number of 34 digits) contains 333 as substring.
It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87358221403) 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, 7796333 + ... + 7807529.
It is an arithmetic number, because the mean of its divisors is an integer number (3860118570).
Almost surely, 287358221407 is an apocalyptic number.
87358221407 is a deficient number, since it is larger than the sum of its proper divisors (5284624273).
87358221407 is a wasteful number, since it uses less digits than its factorization.
87358221407 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11451 (or 11414 counting only the distinct ones).
The product of its (nonzero) digits is 752640, while the sum is 47.
The spelling of 87358221407 in words is "eighty-seven billion, three hundred fifty-eight million, two hundred twenty-one thousand, four hundred seven".
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