280300030505 has 16 divisors (see below), whose sum is σ = 371061129600. Its totient is φ = 201564063360.

The previous prime is 280300030433. The next prime is 280300030529. The reversal of 280300030505 is 505030003082.

It is not a de Polignac number, because 280300030505 - 2³² = 276005063209 is a prime.

It is a super-2 number, since 2×280300030505² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28626365 + ... + 28636154.

It is an arithmetic number, because the mean of its divisors is an integer number (23191320600).

Almost surely, 2^280300030505 is an apocalyptic number.

It is an amenable number.

280300030505 is a deficient number, since it is larger than the sum of its proper divisors (90761099095).

280300030505 is a wasteful number, since it uses less digits than its factorization.

280300030505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57262624.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 280300030505 its reverse (505030003082), we get a palindrome (785330033587).

The spelling of 280300030505 in words is "two hundred eighty billion, three hundred million, thirty thousand, five hundred five".