30145609 has 24 divisors (see below), whose sum is σ = 35589120. Its totient is φ = 25310880.

The previous prime is 30145603. The next prime is 30145613. The reversal of 30145609 is 90654103.

It is not a de Polignac number, because 30145609 - 2³ = 30145601 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237304 + ... + 237430.

It is an arithmetic number, because the mean of its divisors is an integer number (1482880).

Almost surely, 2^30145609 is an apocalyptic number.

It is an amenable number.

30145609 is a deficient number, since it is larger than the sum of its proper divisors (5443511).

30145609 is a wasteful number, since it uses less digits than its factorization.

30145609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30145609 is about 5490.5017074945. The cubic root of 30145609 is about 311.2251516966.

The spelling of 30145609 in words is "thirty million, one hundred forty-five thousand, six hundred nine".