30102009 has 16 divisors (see below), whose sum is σ = 47864832. Its totient is φ = 16453008.

The previous prime is 30101999. The next prime is 30102031. The reversal of 30102009 is 90020103.

It is not a de Polignac number, because 30102009 - 2⁴ = 30101993 is a prime.

It is a super-2 number, since 2×30102009² = 1812261891672162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30102089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30679 + ... + 31644.

It is an arithmetic number, because the mean of its divisors is an integer number (2991552).

Almost surely, 2^30102009 is an apocalyptic number.

It is an amenable number.

30102009 is a deficient number, since it is larger than the sum of its proper divisors (17762823).

30102009 is a wasteful number, since it uses less digits than its factorization.

30102009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62356.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 30102009 is about 5486.5297775552. The cubic root of 30102009 is about 311.0750362602.

The spelling of 30102009 in words is "thirty million, one hundred two thousand, nine".