280528030 has 8 divisors (see below), whose sum is σ = 504950472. Its totient is φ = 112211208.

The previous prime is 280528013. The next prime is 280528051. The reversal of 280528030 is 30825082.

280528030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 280528030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14026392 + ... + 14026411.

It is an arithmetic number, because the mean of its divisors is an integer number (63118809).

Almost surely, 2^280528030 is an apocalyptic number.

280528030 is a deficient number, since it is larger than the sum of its proper divisors (224422442).

280528030 is a wasteful number, since it uses less digits than its factorization.

280528030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052810.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 280528030 is about 16748.9710131697. The cubic root of 280528030 is about 654.6242469273.

The spelling of 280528030 in words is "two hundred eighty million, five hundred twenty-eight thousand, thirty".