30730020 has 24 divisors (see below), whose sum is σ = 86044224. Its totient is φ = 8194656.

The previous prime is 30730013. The next prime is 30730061. The reversal of 30730020 is 2003703.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256024 + ... + 256143.

It is an arithmetic number, because the mean of its divisors is an integer number (3585176).

Almost surely, 2^30730020 is an apocalyptic number.

30730020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30730020 is an abundant number, since it is smaller than the sum of its proper divisors (55314204).

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

30730020 is a wasteful number, since it uses less digits than its factorization.

30730020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512179 (or 512177 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 15.

The square root of 30730020 is about 5543.4664245398. The cubic root of 30730020 is about 313.2234587845.

Adding to 30730020 its reverse (2003703), we get a palindrome (32733723).

The spelling of 30730020 in words is "thirty million, seven hundred thirty thousand, twenty".