30816190 has 24 divisors (see below), whose sum is σ = 57034152. Its totient is φ = 11988000.

The previous prime is 30816187. The next prime is 30816199. The reversal of 30816190 is 9161803.

It is a happy number.

It is a super-2 number, since 2×30816190² = 1899275132232200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30816199) 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 11 ways as a sum of consecutive naturals, for example, 12565 + ... + 14815.

It is an arithmetic number, because the mean of its divisors is an integer number (2376423).

Almost surely, 2^30816190 is an apocalyptic number.

30816190 is a deficient number, since it is larger than the sum of its proper divisors (26217962).

30816190 is a wasteful number, since it uses less digits than its factorization.

30816190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 30816190 is about 5551.2331963267. The cubic root of 30816190 is about 313.5159553584.

Adding to 30816190 its reverse (9161803), we get a palindrome (39977993).

The spelling of 30816190 in words is "thirty million, eight hundred sixteen thousand, one hundred ninety".