Base | Representation |
---|---|
bin | 1001101001001… |
… | …11101110000101 |
3 | 12122020022010002 |
4 | 10310213232011 |
5 | 131202344140 |
6 | 12010011045 |
7 | 2001443636 |
oct | 464475605 |
9 | 178208102 |
10 | 80903045 |
11 | 41738723 |
12 | 23116a85 |
13 | 139b8432 |
14 | aa5d88d |
15 | 7181415 |
hex | 4d27b85 |
80903045 has 16 divisors (see below), whose sum is σ = 104690880. Its totient is φ = 59817600.
The previous prime is 80903003. The next prime is 80903057. The reversal of 80903045 is 54030908.
It is not a de Polignac number, because 80903045 - 26 = 80902981 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 80902999 and 80903017.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6491 + ... + 14280.
It is an arithmetic number, because the mean of its divisors is an integer number (6543180).
Almost surely, 280903045 is an apocalyptic number.
It is an amenable number.
80903045 is a deficient number, since it is larger than the sum of its proper divisors (23787835).
80903045 is a wasteful number, since it uses less digits than its factorization.
80903045 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 20836.
The product of its (nonzero) digits is 4320, while the sum is 29.
The square root of 80903045 is about 8994.6119983021. The cubic root of 80903045 is about 432.5021684545.
The spelling of 80903045 in words is "eighty million, nine hundred three thousand, forty-five".
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