30525028 has 12 divisors (see below), whose sum is σ = 53948412. Its totient is φ = 15111200.

The previous prime is 30524983. The next prime is 30525041. The reversal of 30525028 is 82052503.

It can be written as a sum of positive squares in 2 ways, for example, as 28387584 + 2137444 = 5328^2 + 1462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30524993 and 30525011.

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, 37375 + ... + 38182.

It is an arithmetic number, because the mean of its divisors is an integer number (4495701).

Almost surely, 2^30525028 is an apocalyptic number.

It is an amenable number.

30525028 is a deficient number, since it is larger than the sum of its proper divisors (23423384).

30525028 is a wasteful number, since it uses less digits than its factorization.

30525028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75662 (or 75660 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 30525028 is about 5524.9459725865. The cubic root of 30525028 is about 312.5254268377.

The spelling of 30525028 in words is "thirty million, five hundred twenty-five thousand, twenty-eight".