30820004 has 12 divisors (see below), whose sum is σ = 54491724. Its totient is φ = 15250944.

The previous prime is 30820003. The next prime is 30820019. The reversal of 30820004 is 40002803.

It can be written as a sum of positive squares in 2 ways, for example, as 20884900 + 9935104 = 4570^2 + 3152^2 .

It is not an unprimeable number, because it can be changed into a prime (30820003) 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, 39329 + ... + 40104.

It is an arithmetic number, because the mean of its divisors is an integer number (4540977).

Almost surely, 2^30820004 is an apocalyptic number.

It is an amenable number.

30820004 is a deficient number, since it is larger than the sum of its proper divisors (23671720).

30820004 is a wasteful number, since it uses less digits than its factorization.

30820004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79534 (or 79532 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 30820004 is about 5551.5767129708. The cubic root of 30820004 is about 313.5288890417.

Adding to 30820004 its reverse (40002803), we get a palindrome (70822807).

The spelling of 30820004 in words is "thirty million, eight hundred twenty thousand, four".