30280280 has 32 divisors (see below), whose sum is σ = 68318640. Its totient is φ = 12078720.

The previous prime is 30280253. The next prime is 30280291. The reversal of 30280280 is 8208203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17870 + ... + 19490.

Almost surely, 2^30280280 is an apocalyptic number.

It is an amenable number.

30280280 is an abundant number, since it is smaller than the sum of its proper divisors (38038360).

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

30280280 is a wasteful number, since it uses less digits than its factorization.

30280280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 30280280 is about 5502.7520387530. The cubic root of 30280280 is about 311.6879138797.

Adding to 30280280 its reverse (8208203), we get a palindrome (38488483).

The spelling of 30280280 in words is "thirty million, two hundred eighty thousand, two hundred eighty".