30280532 has 12 divisors (see below), whose sum is σ = 53184180. Its totient is φ = 15085056.

The previous prime is 30280531. The next prime is 30280561. The reversal of 30280532 is 23508203.

It can be written as a sum of positive squares in 2 ways, for example, as 9523396 + 20757136 = 3086^2 + 4556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30280498 and 30280507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280531) 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, 12557 + ... + 14772.

It is an arithmetic number, because the mean of its divisors is an integer number (4432015).

Almost surely, 2^30280532 is an apocalyptic number.

It is an amenable number.

30280532 is a deficient number, since it is larger than the sum of its proper divisors (22903648).

30280532 is a wasteful number, since it uses less digits than its factorization.

30280532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27610 (or 27608 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30280532 is about 5502.7749363389. The cubic root of 30280532 is about 311.6887785253.

Adding to 30280532 its reverse (23508203), we get a palindrome (53788735).

The spelling of 30280532 in words is "thirty million, two hundred eighty thousand, five hundred thirty-two".