30240219 has 4 divisors (see below), whose sum is σ = 40320296. Its totient is φ = 20160144.

The previous prime is 30240209. The next prime is 30240251. The reversal of 30240219 is 91204203.

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

It is not a de Polignac number, because 30240219 - 2⁵ = 30240187 is a prime.

It is a super-2 number, since 2×30240219² = 1828941690335922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30240195 and 30240204.

It is not an unprimeable number, because it can be changed into a prime (30240209) 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, 5040034 + ... + 5040039.

It is an arithmetic number, because the mean of its divisors is an integer number (10080074).

Almost surely, 2^30240219 is an apocalyptic number.

30240219 is a deficient number, since it is larger than the sum of its proper divisors (10080077).

30240219 is a wasteful number, since it uses less digits than its factorization.

30240219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080076.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30240219 is about 5499.1107462934. The cubic root of 30240219 is about 311.5503981967.

The spelling of 30240219 in words is "thirty million, two hundred forty thousand, two hundred nineteen".