Base | Representation |
---|---|
bin | 111010111000… |
… | …1110010101111 |
3 | 2011002121021002 |
4 | 1311301302233 |
5 | 30400443144 |
6 | 3021430515 |
7 | 523300664 |
oct | 165616257 |
9 | 64077232 |
10 | 30874799 |
11 | 1647876a |
12 | a40b43b |
13 | 6520217 |
14 | 4159a6b |
15 | 2a9d14e |
hex | 1d71caf |
30874799 has 4 divisors (see below), whose sum is σ = 31045560. Its totient is φ = 30704040.
The previous prime is 30874787. The next prime is 30874807. The reversal of 30874799 is 99747803.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99747803 = 23 ⋅4336861.
It is a cyclic number.
It is not a de Polignac number, because 30874799 - 24 = 30874783 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30874709) 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, 85109 + ... + 85470.
It is an arithmetic number, because the mean of its divisors is an integer number (7761390).
Almost surely, 230874799 is an apocalyptic number.
30874799 is a deficient number, since it is larger than the sum of its proper divisors (170761).
30874799 is a wasteful number, since it uses less digits than its factorization.
30874799 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 170760.
The product of its (nonzero) digits is 381024, while the sum is 47.
The square root of 30874799 is about 5556.5096058587. The cubic root of 30874799 is about 313.7145870942.
The spelling of 30874799 in words is "thirty million, eight hundred seventy-four thousand, seven hundred ninety-nine".
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