280000030 has 16 divisors (see below), whose sum is σ = 533647440. Its totient is φ = 105411712.

The previous prime is 280000027. The next prime is 280000033. The reversal of 280000030 is 30000082.

It is an interprime number because it is at equal distance from previous prime (280000027) and next prime (280000033).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280000033) by changing a digit.

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, 823360 + ... + 823699.

It is an arithmetic number, because the mean of its divisors is an integer number (33352965).

Almost surely, 2^280000030 is an apocalyptic number.

280000030 is a deficient number, since it is larger than the sum of its proper divisors (253647410).

280000030 is a wasteful number, since it uses less digits than its factorization.

280000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647083.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 280000030 is about 16733.2014271029. The cubic root of 280000030 is about 654.2132854025.

The spelling of 280000030 in words is "two hundred eighty million, thirty", and thus it is an aban number.