Base | Representation |
---|---|
bin | 1001100010111… |
… | …01000011000101 |
3 | 12120200010101000 |
4 | 10301131003011 |
5 | 130444313101 |
6 | 11540123513 |
7 | 1661415456 |
oct | 461350305 |
9 | 176603330 |
10 | 80072901 |
11 | 41220a57 |
12 | 22996599 |
13 | 1378761c |
14 | a8c512d |
15 | 706a486 |
hex | 4c5d0c5 |
80072901 has 16 divisors (see below), whose sum is σ = 119805120. Its totient is φ = 52851600.
The previous prime is 80072893. The next prime is 80072903. The reversal of 80072901 is 10927008.
It is not a de Polignac number, because 80072901 - 23 = 80072893 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80072903) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11955 + ... + 17408.
It is an arithmetic number, because the mean of its divisors is an integer number (7487820).
Almost surely, 280072901 is an apocalyptic number.
It is an amenable number.
80072901 is a deficient number, since it is larger than the sum of its proper divisors (39732219).
80072901 is a wasteful number, since it uses less digits than its factorization.
80072901 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 29473 (or 29467 counting only the distinct ones).
The product of its (nonzero) digits is 1008, while the sum is 27.
The square root of 80072901 is about 8948.3462717979. The cubic root of 80072901 is about 431.0177819728.
Adding to 80072901 its reverse (10927008), we get a palindrome (90999909).
The spelling of 80072901 in words is "eighty million, seventy-two thousand, nine hundred one".
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