Base | Representation |
---|---|
bin | 1011101000101… |
… | …0100010111010 |
3 | 10101211101201200 |
4 | 2322022202322 |
5 | 44443130403 |
6 | 4501555030 |
7 | 1131544551 |
oct | 272124272 |
9 | 111741650 |
10 | 48801978 |
11 | 25602715 |
12 | 14415a76 |
13 | a159014 |
14 | 66a4d98 |
15 | 443eca3 |
hex | 2e8a8ba |
48801978 has 24 divisors (see below), whose sum is σ = 106070016. Its totient is φ = 16216200.
The previous prime is 48801959. The next prime is 48801997. The reversal of 48801978 is 87910884.
48801978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (48801959) and next prime (48801997).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1863 + ... + 10053.
It is an arithmetic number, because the mean of its divisors is an integer number (4419584).
Almost surely, 248801978 is an apocalyptic number.
48801978 is an abundant number, since it is smaller than the sum of its proper divisors (57268038).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
48801978 is a wasteful number, since it uses less digits than its factorization.
48801978 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8530 (or 8527 counting only the distinct ones).
The product of its (nonzero) digits is 129024, while the sum is 45.
The square root of 48801978 is about 6985.8412521328. The cubic root of 48801978 is about 365.4369646322.
The spelling of 48801978 in words is "forty-eight million, eight hundred one thousand, nine hundred seventy-eight".
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