30930819 has 8 divisors (see below), whose sum is σ = 41294160. Its totient is φ = 20594016.

The previous prime is 30930799. The next prime is 30930829. The reversal of 30930819 is 91803903.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30930819 - 2⁵ = 30930787 is a prime.

It is a super-2 number, since 2×30930819² = 1913431128021522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30930819.

It is not an unprimeable number, because it can be changed into a prime (30930829) 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 7 ways as a sum of consecutive naturals, for example, 3732 + ... + 8705.

It is an arithmetic number, because the mean of its divisors is an integer number (5161770).

Almost surely, 2^30930819 is an apocalyptic number.

30930819 is a deficient number, since it is larger than the sum of its proper divisors (10363341).

30930819 is a wasteful number, since it uses less digits than its factorization.

30930819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13269.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 30930819 is about 5561.5482556569. The cubic root of 30930819 is about 313.9042096274.

The spelling of 30930819 in words is "thirty million, nine hundred thirty thousand, eight hundred nineteen".