30525516 has 72 divisors (see below), whose sum is σ = 91247520. Its totient is φ = 8418816.

The previous prime is 30525511. The next prime is 30525529. The reversal of 30525516 is 61552503.

It is a self number, because there is not a number n which added to its sum of digits gives 30525516.

It is not an unprimeable number, because it can be changed into a prime (30525511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5220 + ... + 9396.

Almost surely, 2^30525516 is an apocalyptic number.

30525516 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30525516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45623760).

30525516 is an abundant number, since it is smaller than the sum of its proper divisors (60722004).

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

30525516 is a wasteful number, since it uses less digits than its factorization.

30525516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4223 (or 4218 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 30525516 is about 5524.9901357378. The cubic root of 30525516 is about 312.5270922645.

The spelling of 30525516 in words is "thirty million, five hundred twenty-five thousand, five hundred sixteen".