30528265 has 8 divisors (see below), whose sum is σ = 37325448. Its totient is φ = 23961600.

The previous prime is 30528247. The next prime is 30528287. The reversal of 30528265 is 56282503.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 355216 + 30173049 = 596^2 + 5493^2 .

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

It is not a de Polignac number, because 30528265 - 2⁷ = 30528137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57336 + ... + 57865.

It is an arithmetic number, because the mean of its divisors is an integer number (4665681).

Almost surely, 2^30528265 is an apocalyptic number.

It is an amenable number.

30528265 is a deficient number, since it is larger than the sum of its proper divisors (6797183).

30528265 is a wasteful number, since it uses less digits than its factorization.

30528265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115259.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 30528265 is about 5525.2389088618. The cubic root of 30528265 is about 312.5364736095.

The spelling of 30528265 in words is "thirty million, five hundred twenty-eight thousand, two hundred sixty-five".