Base | Representation |
---|---|
bin | 11010001001101100… |
… | …101110100110000010 |
3 | 2200110221111011212210 |
4 | 122021230232212002 |
5 | 430001440220204 |
6 | 20522204002550 |
7 | 2012564061144 |
oct | 321154564602 |
9 | 80427434783 |
10 | 28080007554 |
11 | 109aa483315 |
12 | 5537b30456 |
13 | 28566816b1 |
14 | 1505458c94 |
15 | ae52bc389 |
hex | 689b2e982 |
28080007554 has 8 divisors (see below), whose sum is σ = 56160015120. Its totient is φ = 9360002516.
The previous prime is 28080007541. The next prime is 28080007561. The reversal of 28080007554 is 45570008082.
It is a sphenic number, since it is the product of 3 distinct primes.
28080007554 is an admirable number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340000624 + ... + 2340000635.
It is an arithmetic number, because the mean of its divisors is an integer number (7020001890).
Almost surely, 228080007554 is an apocalyptic number.
28080007554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28080007554 is a wasteful number, since it uses less digits than its factorization.
28080007554 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4680001264.
The product of its (nonzero) digits is 89600, while the sum is 39.
The spelling of 28080007554 in words is "twenty-eight billion, eighty million, seven thousand, five hundred fifty-four".
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