30442209 has 16 divisors (see below), whose sum is σ = 46650240. Its totient is φ = 17297280.

The previous prime is 30442201. The next prime is 30442211. The reversal of 30442209 is 90224403.

It is a happy number.

It is not a de Polignac number, because 30442209 - 2³ = 30442201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30442201) 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, 204 + ... + 7805.

It is an arithmetic number, because the mean of its divisors is an integer number (2915640).

Almost surely, 2^30442209 is an apocalyptic number.

It is an amenable number.

30442209 is a deficient number, since it is larger than the sum of its proper divisors (16208031).

30442209 is a wasteful number, since it uses less digits than its factorization.

30442209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30442209 is about 5517.4458764903. The cubic root of 30442209 is about 312.2425279777.

It can be divided in two parts, 3044 and 2209, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 30442209 in words is "thirty million, four hundred forty-two thousand, two hundred nine".