30525280 has 24 divisors (see below), whose sum is σ = 72116352. Its totient is φ = 12210048.

The previous prime is 30525269. The next prime is 30525283. The reversal of 30525280 is 8252503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30525283) 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, 95232 + ... + 95551.

It is an arithmetic number, because the mean of its divisors is an integer number (3004848).

Almost surely, 2^30525280 is an apocalyptic number.

It is an amenable number.

30525280 is an abundant number, since it is smaller than the sum of its proper divisors (41591072).

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

30525280 is a wasteful number, since it uses less digits than its factorization.

30525280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190798 (or 190790 counting only the distinct ones).

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

The square root of 30525280 is about 5524.9687781923. The cubic root of 30525280 is about 312.5262868554.

Adding to 30525280 its reverse (8252503), we get a palindrome (38777783).

The spelling of 30525280 in words is "thirty million, five hundred twenty-five thousand, two hundred eighty".