30211930 has 24 divisors (see below), whose sum is σ = 63261108. Its totient is φ = 10358208.

The previous prime is 30211927. The next prime is 30211931. The reversal of 30211930 is 3911203.

It can be written as a sum of positive squares in 2 ways, for example, as 30041361 + 170569 = 5481^2 + 413^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30211898 and 30211907.

It is not an unprimeable number, because it can be changed into a prime (30211931) 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, 30339 + ... + 31318.

Almost surely, 2^30211930 is an apocalyptic number.

30211930 is an abundant number, since it is smaller than the sum of its proper divisors (33049178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30211930 is a wasteful number, since it uses less digits than its factorization.

30211930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61678 (or 61671 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 30211930 is about 5496.5380013241. The cubic root of 30211930 is about 311.4532185775.

The spelling of 30211930 in words is "thirty million, two hundred eleven thousand, nine hundred thirty".