30820016 has 20 divisors (see below), whose sum is σ = 60534072. Its totient is φ = 15198336.

The previous prime is 30820003. The next prime is 30820019. The reversal of 30820016 is 61002803.

It is a self number, because there is not a number n which added to its sum of digits gives 30820016.

It is not an unprimeable number, because it can be changed into a prime (30820019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12026 + ... + 14361.

Almost surely, 2^30820016 is an apocalyptic number.

It is an amenable number.

30820016 is a deficient number, since it is larger than the sum of its proper divisors (29714056).

30820016 is a wasteful number, since it uses less digits than its factorization.

30820016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26468 (or 26462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 30820016 is about 5551.5777937448. The cubic root of 30820016 is about 313.5289297333.

Adding to 30820016 its reverse (61002803), we get a palindrome (91822819).

The spelling of 30820016 in words is "thirty million, eight hundred twenty thousand, sixteen".