Base | Representation |
---|---|
bin | 1010101110010000… |
… | …1010101110000001 |
3 | 21102121012002221210 |
4 | 2223210022232001 |
5 | 21343331310100 |
6 | 1153341440333 |
7 | 131220604035 |
oct | 25344125601 |
9 | 7377162853 |
10 | 2878385025 |
11 | 12478562aa |
12 | 683b700a9 |
13 | 36b443509 |
14 | 1d43ca1c5 |
15 | 11ca6ec50 |
hex | ab90ab81 |
2878385025 has 24 divisors (see below), whose sum is σ = 4965842880. Its totient is φ = 1468392640.
The previous prime is 2878384981. The next prime is 2878385051. The reversal of 2878385025 is 5205838782.
It is not a de Polignac number, because 2878385025 - 212 = 2878380929 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 832590 + ... + 836039.
It is an arithmetic number, because the mean of its divisors is an integer number (206910120).
Almost surely, 22878385025 is an apocalyptic number.
2878385025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.
It is an amenable number.
2878385025 is a deficient number, since it is larger than the sum of its proper divisors (2087457855).
2878385025 is a wasteful number, since it uses less digits than its factorization.
2878385025 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1668665 (or 1668660 counting only the distinct ones).
The product of its (nonzero) digits is 1075200, while the sum is 48.
The square root of 2878385025 is about 53650.5827088579. The cubic root of 2878385025 is about 1422.4913325454.
The spelling of 2878385025 in words is "two billion, eight hundred seventy-eight million, three hundred eighty-five thousand, twenty-five".
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