Base | Representation |
---|---|
bin | 1000011111100… |
… | …01010011000100 |
3 | 11222001111221201 |
4 | 10033301103010 |
5 | 121214233243 |
6 | 11022552244 |
7 | 1523361250 |
oct | 417612304 |
9 | 158044851 |
10 | 71242948 |
11 | 3723a977 |
12 | 1ba38684 |
13 | 119b54ba |
14 | 9667260 |
15 | 63c404d |
hex | 43f14c4 |
71242948 has 12 divisors (see below), whose sum is σ = 142485952. Its totient is φ = 30532680.
The previous prime is 71242943. The next prime is 71242961. The reversal of 71242948 is 84924217.
71242948 is an admirable number.
It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.
It is not an unprimeable number, because it can be changed into a prime (71242943) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272168 + ... + 1272223.
Almost surely, 271242948 is an apocalyptic number.
It is an amenable number.
71242948 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.
71242948 is a wasteful number, since it uses less digits than its factorization.
71242948 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2544402 (or 2544400 counting only the distinct ones).
The product of its digits is 32256, while the sum is 37.
The square root of 71242948 is about 8440.5537733018. The cubic root of 71242948 is about 414.5535393172.
It can be divided in two parts, 712 and 42948, that added together give a triangular number (43660 = T295).
The spelling of 71242948 in words is "seventy-one million, two hundred forty-two thousand, nine hundred forty-eight".
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