Base | Representation |
---|---|
bin | 101000101000010101… |
… | …1111000110100001011 |
3 | 22100012210222002002121 |
4 | 1101100223320310023 |
5 | 2412143233344412 |
6 | 104030011112111 |
7 | 6206132334100 |
oct | 1212053706413 |
9 | 270183862077 |
10 | 87253028107 |
11 | 34005072493 |
12 | 14ab0a42637 |
13 | 82c69a081b |
14 | 431a15caa7 |
15 | 240a119107 |
hex | 1450af8d0b |
87253028107 has 6 divisors (see below), whose sum is σ = 101498420508. Its totient is φ = 74788309764.
The previous prime is 87253028089. The next prime is 87253028111. The reversal of 87253028107 is 70182035278.
It is not a de Polignac number, because 87253028107 - 223 = 87244639499 is a prime.
It is a super-2 number, since 2×872530281072 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (87253028147) 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 5 ways as a sum of consecutive naturals, for example, 890336973 + ... + 890337070.
It is an arithmetic number, because the mean of its divisors is an integer number (16916403418).
Almost surely, 287253028107 is an apocalyptic number.
87253028107 is a deficient number, since it is larger than the sum of its proper divisors (14245392401).
87253028107 is a wasteful number, since it uses less digits than its factorization.
87253028107 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1780674057 (or 1780674050 counting only the distinct ones).
The product of its (nonzero) digits is 188160, while the sum is 43.
The spelling of 87253028107 in words is "eighty-seven billion, two hundred fifty-three million, twenty-eight thousand, one hundred seven".
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