30040165 has 4 divisors (see below), whose sum is σ = 36048204. Its totient is φ = 24032128.

The previous prime is 30040151. The next prime is 30040169. The reversal of 30040165 is 56104003.

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 12383361 + 17656804 = 3519^2 + 4202^2 .

It is a cyclic number.

It is not a de Polignac number, because 30040165 - 2⁵ = 30040133 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 (30040169) 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, 3004012 + ... + 3004021.

It is an arithmetic number, because the mean of its divisors is an integer number (9012051).

Almost surely, 2^30040165 is an apocalyptic number.

It is an amenable number.

30040165 is a deficient number, since it is larger than the sum of its proper divisors (6008039).

30040165 is an equidigital number, since it uses as much as digits as its factorization.

30040165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6008038.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 30040165 is about 5480.8908947360. The cubic root of 30040165 is about 310.8618576383.

Adding to 30040165 its reverse (56104003), we get a palindrome (86144168).

The spelling of 30040165 in words is "thirty million, forty thousand, one hundred sixty-five".