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30138035 = 56027607
BaseRepresentation
bin111001011110…
…1111010110011
32002201011121112
41302331322303
530203404120
62553543535
7514111664
oct162757263
962634545
1030138035
1116015174
12a114bab
136322a75
14400736b
1529a4bc5
hex1cbdeb3

30138035 has 4 divisors (see below), whose sum is σ = 36165648. Its totient is φ = 24110424.

The previous prime is 30138023. The next prime is 30138037. The reversal of 30138035 is 53083103.

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

It is a cyclic number.

It is not a de Polignac number, because 30138035 - 24 = 30138019 is a prime.

It is a super-2 number, since 2×301380352 = 1816602307322450, which contains 22 as substring.

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 30138035.

It is not an unprimeable number, because it can be changed into a prime (30138037) 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, 3013799 + ... + 3013808.

It is an arithmetic number, because the mean of its divisors is an integer number (9041412).

Almost surely, 230138035 is an apocalyptic number.

30138035 is a deficient number, since it is larger than the sum of its proper divisors (6027613).

30138035 is an equidigital number, since it uses as much as digits as its factorization.

30138035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027612.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 30138035 is about 5489.8119275618. The cubic root of 30138035 is about 311.1990846969.

The spelling of 30138035 in words is "thirty million, one hundred thirty-eight thousand, thirty-five".

Divisors: 1 5 6027607 30138035