Base | Representation |
---|---|
bin | 101000110011010000… |
… | …1011000011110101110 |
3 | 22101011100022022210000 |
4 | 1101212201120132232 |
5 | 2413421024413344 |
6 | 104130215125130 |
7 | 6221201244660 |
oct | 1214641303656 |
9 | 271140268700 |
10 | 87619372974 |
11 | 34182940841 |
12 | 14b936737a6 |
13 | 835485a533 |
14 | 4352a82530 |
15 | 242c380a69 |
hex | 14668587ae |
87619372974 has 80 divisors (see below), whose sum is σ = 236189289600. Its totient is φ = 23716516176.
The previous prime is 87619372961. The next prime is 87619373029. The reversal of 87619372974 is 47927391678.
87619372974 is a `hidden beast` number, since 8 + 7 + 619 + 3 + 7 + 2 + 9 + 7 + 4 = 666.
It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (63).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2011764 + ... + 2054855.
It is an arithmetic number, because the mean of its divisors is an integer number (2952366120).
Almost surely, 287619372974 is an apocalyptic number.
87619372974 is an abundant number, since it is smaller than the sum of its proper divisors (148569916626).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87619372974 is a wasteful number, since it uses less digits than its factorization.
87619372974 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4066659 (or 4066650 counting only the distinct ones).
The product of its digits is 32006016, while the sum is 63.
The spelling of 87619372974 in words is "eighty-seven billion, six hundred nineteen million, three hundred seventy-two thousand, nine hundred seventy-four".
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