Base | Representation |
---|---|
bin | 101000101110111011… |
… | …0101101111100001011 |
3 | 22100210012201010201001 |
4 | 1101131312231330023 |
5 | 2413121314032310 |
6 | 104103542435431 |
7 | 6214454325250 |
oct | 1213566557413 |
9 | 270705633631 |
10 | 87473970955 |
11 | 3410885a088 |
12 | 14b52a32b77 |
13 | 83306ab437 |
14 | 433b633427 |
15 | 241e70d93a |
hex | 145ddadf0b |
87473970955 has 32 divisors (see below), whose sum is σ = 122313502080. Its totient is φ = 58818908160.
The previous prime is 87473970953. The next prime is 87473970959. The reversal of 87473970955 is 55907937478.
It is not a de Polignac number, because 87473970955 - 21 = 87473970953 is a prime.
It is a super-2 number, since 2×874739709552 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (87473970953) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251865 + ... + 488245.
It is an arithmetic number, because the mean of its divisors is an integer number (3822296940).
Almost surely, 287473970955 is an apocalyptic number.
87473970955 is a deficient number, since it is larger than the sum of its proper divisors (34839531125).
87473970955 is a wasteful number, since it uses less digits than its factorization.
87473970955 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 236599.
The product of its (nonzero) digits is 66679200, while the sum is 64.
The spelling of 87473970955 in words is "eighty-seven billion, four hundred seventy-three million, nine hundred seventy thousand, nine hundred fifty-five".
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