280000030530 has 64 divisors (see below), whose sum is σ = 740349403776. Its totient is φ = 67206720000.

The previous prime is 280000030507. The next prime is 280000030559. The reversal of 280000030530 is 35030000082.

It is a junction number, because it is equal to n+sod(n) for n = 280000030497 and 280000030506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4167091 + ... + 4233750.

It is an arithmetic number, because the mean of its divisors is an integer number (11567959434).

Almost surely, 2^280000030530 is an apocalyptic number.

280000030530 is an abundant number, since it is smaller than the sum of its proper divisors (460349373246).

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

280000030530 is a wasteful number, since it uses less digits than its factorization.

280000030530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400963.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 280000030530 in words is "two hundred eighty billion, thirty thousand, five hundred thirty".