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30758041 = 121325357
BaseRepresentation
bin111010101010…
…1010010011001
32010212200002201
41311111102121
530333224131
63015130201
7522303406
oct165252231
963780081
1030758041
11163a8a76
12a373961
1364ac032
1441292ad
152a78761
hex1d55499

30758041 has 4 divisors (see below), whose sum is σ = 30784612. Its totient is φ = 30731472.

The previous prime is 30758033. The next prime is 30758047. The reversal of 30758041 is 14085703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14085703 = 70919867.

It can be written as a sum of positive squares in 2 ways, for example, as 4748041 + 26010000 = 2179^2 + 5100^2 .

It is a cyclic number.

It is not a de Polignac number, because 30758041 - 23 = 30758033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30758047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11466 + ... + 13891.

It is an arithmetic number, because the mean of its divisors is an integer number (7696153).

Almost surely, 230758041 is an apocalyptic number.

It is an amenable number.

30758041 is a deficient number, since it is larger than the sum of its proper divisors (26571).

30758041 is a wasteful number, since it uses less digits than its factorization.

30758041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26570.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30758041 is about 5545.9932383659. The cubic root of 30758041 is about 313.3186335592.

The spelling of 30758041 in words is "thirty million, seven hundred fifty-eight thousand, forty-one".

Divisors: 1 1213 25357 30758041