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30941485 = 56188297
BaseRepresentation
bin111011000001…
…0000100101101
32011012222201221
41312002010231
530410111420
63023103341
7523666261
oct166020455
964188657
1030941485
1116513883
12a441b51
136544693
1441760a1
152ab2caa
hex1d8212d

30941485 has 4 divisors (see below), whose sum is σ = 37129788. Its totient is φ = 24753184.

The previous prime is 30941483. The next prime is 30941497. The reversal of 30941485 is 58414903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7409284 + 23532201 = 2722^2 + 4851^2 .

It is a cyclic number.

It is not a de Polignac number, because 30941485 - 21 = 30941483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30941485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30941483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3094144 + ... + 3094153.

It is an arithmetic number, because the mean of its divisors is an integer number (9282447).

Almost surely, 230941485 is an apocalyptic number.

It is an amenable number.

30941485 is a deficient number, since it is larger than the sum of its proper divisors (6188303).

30941485 is an equidigital number, since it uses as much as digits as its factorization.

30941485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6188302.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 30941485 is about 5562.5070786472. The cubic root of 30941485 is about 313.9402871022.

The spelling of 30941485 in words is "thirty million, nine hundred forty-one thousand, four hundred eighty-five".

Divisors: 1 5 6188297 30941485