Base | Representation |
---|---|
bin | 10110101101011… |
… | …110011101000110 |
3 | 222112221211010220 |
4 | 112231132131012 |
5 | 1240020114344 |
6 | 101450325210 |
7 | 12304421256 |
oct | 2655363506 |
9 | 875854126 |
10 | 381019974 |
11 | 186091a45 |
12 | a7729806 |
13 | 60c2750a |
14 | 38863966 |
15 | 236b4c19 |
hex | 16b5e746 |
381019974 has 16 divisors (see below), whose sum is σ = 762384960. Its totient is φ = 126949160.
The previous prime is 381019957. The next prime is 381019981. The reversal of 381019974 is 479910183.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1297 + ... + 27635.
It is an arithmetic number, because the mean of its divisors is an integer number (47649060).
Almost surely, 2381019974 is an apocalyptic number.
381019974 is an abundant number, since it is smaller than the sum of its proper divisors (381364986).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
381019974 is a wasteful number, since it uses less digits than its factorization.
381019974 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28755.
The product of its (nonzero) digits is 54432, while the sum is 42.
The square root of 381019974 is about 19519.7329387469. The cubic root of 381019974 is about 724.9631207558.
The spelling of 381019974 in words is "three hundred eighty-one million, nineteen thousand, nine hundred seventy-four".
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