Base | Representation |
---|---|
bin | 111010101111… |
… | …1111010110110 |
3 | 2010221212211122 |
4 | 1311133322312 |
5 | 30341122330 |
6 | 3020103542 |
7 | 522544361 |
oct | 165377266 |
9 | 63855748 |
10 | 30801590 |
11 | 16428766 |
12 | a394bb2 |
13 | 64c5ac1 |
14 | 413b0d8 |
15 | 2a865e5 |
hex | 1d5feb6 |
30801590 has 8 divisors (see below), whose sum is σ = 55442880. Its totient is φ = 12320632.
The previous prime is 30801587. The next prime is 30801593. The reversal of 30801590 is 9510803.
It is an interprime number because it is at equal distance from previous prime (30801587) and next prime (30801593).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30801593) 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, 1540070 + ... + 1540089.
It is an arithmetic number, because the mean of its divisors is an integer number (6930360).
Almost surely, 230801590 is an apocalyptic number.
30801590 is a deficient number, since it is larger than the sum of its proper divisors (24641290).
30801590 is a wasteful number, since it uses less digits than its factorization.
30801590 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3080166.
The product of its (nonzero) digits is 1080, while the sum is 26.
The square root of 30801590 is about 5549.9180174125. The cubic root of 30801590 is about 313.4664353278.
The spelling of 30801590 in words is "thirty million, eight hundred one thousand, five hundred ninety".
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