30825280 has 28 divisors (see below), whose sum is σ = 73403460. Its totient is φ = 12329984.

The previous prime is 30825257. The next prime is 30825283. The reversal of 30825280 is 8252803.

It can be written as a sum of positive squares in 2 ways, for example, as 10969344 + 19855936 = 3312^2 + 4456^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30825283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47845 + ... + 48484.

Almost surely, 2^30825280 is an apocalyptic number.

It is an amenable number.

30825280 is an abundant number, since it is smaller than the sum of its proper divisors (42578180).

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

30825280 is an equidigital number, since it uses as much as digits as its factorization.

30825280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96346 (or 96336 counting only the distinct ones).

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

The square root of 30825280 is about 5552.0518729565. The cubic root of 30825280 is about 313.5467787651.

The spelling of 30825280 in words is "thirty million, eight hundred twenty-five thousand, two hundred eighty".