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30848911 = 231341257
BaseRepresentation
bin111010110101…
…1011110001111
32011001021202021
41311223132033
530344131121
63021111011
7523132342
oct165533617
964037667
1030848911
1116460275
12a3b8467
1365114c2
144150459
152a95641
hex1d6b78f

30848911 has 4 divisors (see below), whose sum is σ = 32190192. Its totient is φ = 29507632.

The previous prime is 30848903. The next prime is 30848929. The reversal of 30848911 is 11984803.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11984803 = 101311831.

It is a cyclic number.

It is not a de Polignac number, because 30848911 - 23 = 30848903 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 (30848971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 670606 + ... + 670651.

It is an arithmetic number, because the mean of its divisors is an integer number (8047548).

Almost surely, 230848911 is an apocalyptic number.

30848911 is a deficient number, since it is larger than the sum of its proper divisors (1341281).

30848911 is a wasteful number, since it uses less digits than its factorization.

30848911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341280.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 30848911 is about 5554.1795973843. The cubic root of 30848911 is about 313.6268811070.

The spelling of 30848911 in words is "thirty million, eight hundred forty-eight thousand, nine hundred eleven".

Divisors: 1 23 1341257 30848911