30205080 has 48 divisors (see below), whose sum is σ = 98167680. Its totient is φ = 8054592.

The previous prime is 30205051. The next prime is 30205081. The reversal of 30205080 is 8050203.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30205081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41592 + ... + 42311.

It is an arithmetic number, because the mean of its divisors is an integer number (2045160).

Almost surely, 2^30205080 is an apocalyptic number.

30205080 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30205080 is an abundant number, since it is smaller than the sum of its proper divisors (67962600).

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

30205080 is a wasteful number, since it uses less digits than its factorization.

30205080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83920 (or 83913 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 30205080 is about 5495.9148465019. The cubic root of 30205080 is about 311.4296780334.

Adding to 30205080 its reverse (8050203), we get a palindrome (38255283).

It can be divided in two parts, 3020 and 5080, that added together give a square (8100 = 90²).

The spelling of 30205080 in words is "thirty million, two hundred five thousand, eighty".